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30797642232 = 2333720368811
BaseRepresentation
bin11100101011101011…
…101011100111111000
32221111100012022211000
4130223223223213320
51001033144022412
622052004205000
72140123432260
oct345353534770
987440168730
1030797642232
1112074514495
125b76099760
132b9a700a56
1416c235c7a0
15c03b874dc
hex72baeb9f8

30797642232 has 64 divisors (see below), whose sum is σ = 97770297600. Its totient is φ = 8799325920.

The previous prime is 30797642231. The next prime is 30797642263. The reversal of 30797642232 is 23224679703.

30797642232 is a `hidden beast` number, since 307 + 9 + 76 + 42 + 232 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30797642231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10182894 + ... + 10185917.

It is an arithmetic number, because the mean of its divisors is an integer number (1527660900).

Almost surely, 230797642232 is an apocalyptic number.

It is an amenable number.

30797642232 is an abundant number, since it is smaller than the sum of its proper divisors (66972655368).

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

30797642232 is a wasteful number, since it uses less digits than its factorization.

30797642232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20368833 (or 20368823 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 45.

The spelling of 30797642232 in words is "thirty billion, seven hundred ninety-seven million, six hundred forty-two thousand, two hundred thirty-two".

Divisors: 1 2 3 4 6 7 8 9 12 14 18 21 24 27 28 36 42 54 56 63 72 84 108 126 168 189 216 252 378 504 756 1512 20368811 40737622 61106433 81475244 122212866 142581677 162950488 183319299 244425732 285163354 366638598 427745031 488851464 549957897 570326708 733277196 855490062 1099915794 1140653416 1283235093 1466554392 1710980124 2199831588 2566470186 3421960248 3849705279 4399663176 5132940372 7699410558 10265880744 15398821116 30797642232