857250520 has 32 divisors (see below), whose sum is σ = 2204359200. Its totient is φ = 293914368.

The previous prime is 857250479. The next prime is 857250553. The reversal of 857250520 is 25052758.

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, 1530525 + ... + 1531084.

It is an arithmetic number, because the mean of its divisors is an integer number (68886225).

Almost surely, 2^857250520 is an apocalyptic number.

It is an amenable number.

857250520 is an abundant number, since it is smaller than the sum of its proper divisors (1347108680).

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

857250520 is a wasteful number, since it uses less digits than its factorization.

857250520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3061627 (or 3061623 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 857250520 is about 29278.8408240490. The cubic root of 857250520 is about 949.9540217822.

The spelling of 857250520 in words is "eight hundred fifty-seven million, two hundred fifty thousand, five hundred twenty".