857974902 has 16 divisors (see below), whose sum is σ = 1716256560. Its totient is φ = 285940512.

The previous prime is 857974877. The next prime is 857974939. The reversal of 857974902 is 209479758.

857974902 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×857974902² = 1472241864923819208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40968 + ... + 58260.

It is an arithmetic number, because the mean of its divisors is an integer number (107266035).

Almost surely, 2^857974902 is an apocalyptic number.

857974902 is an abundant number, since it is smaller than the sum of its proper divisors (858281658).

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

857974902 is a wasteful number, since it uses less digits than its factorization.

857974902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25567.

The product of its (nonzero) digits is 1270080, while the sum is 51.

The square root of 857974902 is about 29291.2086128244. The cubic root of 857974902 is about 950.2215187952.

The spelling of 857974902 in words is "eight hundred fifty-seven million, nine hundred seventy-four thousand, nine hundred two".