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30007172712 = 23311971171789
BaseRepresentation
bin11011111100100100…
…010001111001101000
32212110020210022111010
4123330210101321220
5442423314011322
621441325503520
72111414521356
oct337444217150
985406708433
1030007172712
11117a92a2aa0
125995411ba0
132aa2a06aca
1416493947d6
15ba959420c
hex6fc911e68

30007172712 has 64 divisors (see below), whose sum is σ = 82681502400. Its totient is φ = 8999331840.

The previous prime is 30007172711. The next prime is 30007172731. The reversal of 30007172712 is 21727170003.

It is a self number, because there is not a number n which added to its sum of digits gives 30007172712.

It is not an unprimeable number, because it can be changed into a prime (30007172711) 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, 560287 + ... + 611502.

It is an arithmetic number, because the mean of its divisors is an integer number (1291898475).

Almost surely, 230007172712 is an apocalyptic number.

It is an amenable number.

30007172712 is an abundant number, since it is smaller than the sum of its proper divisors (52674329688).

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

30007172712 is a wasteful number, since it uses less digits than its factorization.

30007172712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171906 (or 1171902 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 30.

The spelling of 30007172712 in words is "thirty billion, seven million, one hundred seventy-two thousand, seven hundred twelve".

Divisors: 1 2 3 4 6 8 11 12 22 24 33 44 66 88 97 132 194 264 291 388 582 776 1067 1164 2134 2328 3201 4268 6402 8536 12804 25608 1171789 2343578 3515367 4687156 7030734 9374312 12889679 14061468 25779358 28122936 38669037 51558716 77338074 103117432 113663533 154676148 227327066 309352296 340990599 454654132 681981198 909308264 1250298863 1363962396 2500597726 2727924792 3750896589 5001195452 7501793178 10002390904 15003586356 30007172712