72857857092 has 24 divisors (see below), whose sum is σ = 170388926400. Its totient is φ = 24230629536.

The previous prime is 72857857087. The next prime is 72857857099. The reversal of 72857857092 is 29075875827.

It is not an unprimeable number, because it can be changed into a prime (72857857099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6909867 + ... + 6920402.

It is an arithmetic number, because the mean of its divisors is an integer number (7099538600).

Almost surely, 2^72857857092 is an apocalyptic number.

It is an amenable number.

72857857092 is an abundant number, since it is smaller than the sum of its proper divisors (97531069308).

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

72857857092 is a wasteful number, since it uses less digits than its factorization.

72857857092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13830715 (or 13830713 counting only the distinct ones).

The product of its (nonzero) digits is 19756800, while the sum is 60.

The spelling of 72857857092 in words is "seventy-two billion, eight hundred fifty-seven million, eight hundred fifty-seven thousand, ninety-two".