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250008809980 = 225192237971889
BaseRepresentation
bin1110100011010110101…
…1111011000111111100
3212220022112200110010211
43220311223323013330
513044004223404410
6310504044242204
724030310551556
oct3506553730774
9786275613124
10250008809980
1197034501326
1240553540364
131a763b54bb7
14c159a664d6
1567839a968a
hex3a35afb1fc

250008809980 has 144 divisors (see below), whose sum is σ = 579228874560. Its totient is φ = 90459426816.

The previous prime is 250008809927. The next prime is 250008809983. The reversal of 250008809980 is 89908800052.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250008809983) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 132348876 + ... + 132350764.

It is an arithmetic number, because the mean of its divisors is an integer number (4022422740).

Almost surely, 2250008809980 is an apocalyptic number.

250008809980 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 250008809980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289614437280).

250008809980 is an abundant number, since it is smaller than the sum of its proper divisors (329220064580).

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

250008809980 is a wasteful number, since it uses less digits than its factorization.

250008809980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2756 (or 2735 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 49.

The spelling of 250008809980 in words is "two hundred fifty billion, eight million, eight hundred nine thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 19 20 23 38 46 76 92 95 115 190 230 361 380 437 460 722 797 874 1444 1594 1748 1805 1889 2185 3188 3610 3778 3985 4370 7220 7556 7970 8303 8740 9445 15143 15940 16606 18331 18890 30286 33212 35891 36662 37780 41515 43447 60572 71782 73324 75715 83030 86894 91655 143564 151430 166060 173788 179455 183310 217235 287717 302860 348289 358910 366620 434470 575434 681929 696578 717820 825493 868940 1150868 1363858 1393156 1438585 1505533 1650986 1741445 2727716 2877170 3011066 3301972 3409645 3482890 4127465 5754340 6022132 6617491 6819290 6965780 7527665 8254930 13234982 13638580 15055330 15684367 16509860 26469964 28605127 30110660 31368734 33087455 34627259 57210254 62737468 66174910 69254518 78421835 114420508 132349820 138509036 143025635 156843670 173136295 286051270 313687340 346272590 543497413 572102540 657917921 692545180 1086994826 1315835842 2173989652 2631671684 2717487065 3289589605 5434974130 6579179210 10869948260 12500440499 13158358420 25000880998 50001761996 62502202495 125004404990 250008809980