857924952 has 32 divisors (see below), whose sum is σ = 2145753600. Its totient is φ = 285849504.

The previous prime is 857924933. The next prime is 857924987. The reversal of 857924952 is 259429758.

It is a junction number, because it is equal to n+sod(n) for n = 857924895 and 857924904.

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, 59949 + ... + 72867.

It is an arithmetic number, because the mean of its divisors is an integer number (67054800).

Almost surely, 2^857924952 is an apocalyptic number.

It is an amenable number.

857924952 is an abundant number, since it is smaller than the sum of its proper divisors (1287828648).

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

857924952 is a wasteful number, since it uses less digits than its factorization.

857924952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15695 (or 15691 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 51.

The square root of 857924952 is about 29290.3559555018. The cubic root of 857924952 is about 950.2030782845.

The spelling of 857924952 in words is "eight hundred fifty-seven million, nine hundred twenty-four thousand, nine hundred fifty-two".