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20630250350460 = 223251015871933181
BaseRepresentation
bin1001011000011010110101…
…01111100110011101111100
32201001020021121200120210100
410230031122233212131330
510201001223042203320
6111513223422241100
74226325556430322
oct454153257463574
981036247616710
1020630250350460
116634270547673
122392345126190
13b6856913c3aa
1451471bcb7d12
1525b9907d0790
hex12c35abe677c

20630250350460 has 144 divisors (see below), whose sum is σ = 63305709903072. Its totient is φ = 5437648704000.

The previous prime is 20630250350429. The next prime is 20630250350483. The reversal of 20630250350460 is 6405305203602.

20630250350460 is a `hidden beast` number, since 2 + 0 + 63 + 0 + 2 + 503 + 50 + 46 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9705070 + ... + 11638250.

It is an arithmetic number, because the mean of its divisors is an integer number (439622985438).

Almost surely, 220630250350460 is an apocalyptic number.

20630250350460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20630250350460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31652854951536).

20630250350460 is an abundant number, since it is smaller than the sum of its proper divisors (42675459552612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20630250350460 is a wasteful number, since it uses less digits than its factorization.

20630250350460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1933884 (or 1933879 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

The spelling of 20630250350460 in words is "twenty trillion, six hundred thirty billion, two hundred fifty million, three hundred fifty thousand, four hundred sixty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 101 180 202 303 404 505 587 606 909 1010 1174 1212 1515 1761 1818 2020 2348 2935 3030 3522 3636 4545 5283 5870 6060 7044 8805 9090 10566 11740 17610 18180 21132 26415 35220 52830 59287 105660 118574 177861 237148 296435 355722 533583 592870 711444 889305 1067166 1185740 1778610 1933181 2134332 2667915 3557220 3866362 5335830 5799543 7732724 9665905 10671660 11599086 17398629 19331810 23198172 28997715 34797258 38663620 57995430 69594516 86993145 115990860 173986290 195251281 347972580 390502562 585753843 781005124 976256405 1134777247 1171507686 1757261529 1952512810 2269554494 2343015372 2928769215 3404331741 3514523058 3905025620 4539108988 5673886235 5857538430 6808663482 7029046116 8786307645 10212995223 11347772470 11715076860 13617326964 17021658705 17572615290 20425990446 22695544940 34043317410 35145230580 40851980892 51064976115 68086634820 102129952230 114612501947 204259904460 229225003894 343837505841 458450007788 573062509735 687675011682 1031512517523 1146125019470 1375350023364 1719187529205 2063025035046 2292250038940 3438375058410 4126050070092 5157562587615 6876750116820 10315125175230 20630250350460