857284372 has 12 divisors (see below), whose sum is σ = 1714568800. Its totient is φ = 367407576.

The previous prime is 857284343. The next prime is 857284397. The reversal of 857284372 is 273482758.

857284372 is an admirable number.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15308622 + ... + 15308677.

Almost surely, 2^857284372 is an apocalyptic number.

It is an amenable number.

857284372 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

857284372 is a wasteful number, since it uses less digits than its factorization.

857284372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30617310 (or 30617308 counting only the distinct ones).

The product of its digits is 752640, while the sum is 46.

The square root of 857284372 is about 29279.4189149990. The cubic root of 857284372 is about 949.9665258750.

It can be divided in two parts, 85728 and 4372, that added together give a triangular number (90100 = T₄₂₄).

The spelling of 857284372 in words is "eight hundred fifty-seven million, two hundred eighty-four thousand, three hundred seventy-two".