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30202012230 = 235131933071307
BaseRepresentation
bin11100001000001011…
…100010001001000110
32212221211102012001120
4130020023202021012
5443323203342410
621512525534410
72116301603535
oct341013421106
985854365046
1030202012230
1111899280895
125a2a714406
132b041a5270
1416671d231c
15bbb72e570
hex7082e2246

30202012230 has 128 divisors (see below), whose sum is σ = 78780860928. Its totient is φ = 7366090752.

The previous prime is 30202012207. The next prime is 30202012259. The reversal of 30202012230 is 3221020203.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23107237 + ... + 23108543.

It is an arithmetic number, because the mean of its divisors is an integer number (615475476).

Almost surely, 230202012230 is an apocalyptic number.

30202012230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30202012230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39390430464).

30202012230 is an abundant number, since it is smaller than the sum of its proper divisors (48578848698).

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

30202012230 is a wasteful number, since it uses less digits than its factorization.

30202012230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 30202012230 its reverse (3221020203), we get a palindrome (33423032433).

The spelling of 30202012230 in words is "thirty billion, two hundred two million, twelve thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 193 195 307 386 390 579 614 921 965 1158 1307 1535 1842 1930 2509 2614 2895 3070 3921 3991 4605 5018 5790 6535 7527 7842 7982 9210 11973 12545 13070 15054 16991 19605 19955 23946 25090 33982 37635 39210 39910 50973 59251 59865 75270 84955 101946 118502 119730 169910 177753 252251 254865 296255 355506 401249 504502 509730 592510 756753 770263 802498 888765 1203747 1261255 1513506 1540526 1777530 2006245 2310789 2407494 2522510 3279263 3783765 3851315 4012490 4621578 5216237 6018735 6558526 7567530 7702630 9837789 10432474 11553945 12037470 15648711 16396315 19675578 23107890 26081185 31297422 32792630 49188945 52162370 77441057 78243555 98377890 154882114 156487110 232323171 387205285 464646342 774410570 1006733741 1161615855 2013467482 2323231710 3020201223 5033668705 6040402446 10067337410 15101006115 30202012230