857157080 has 32 divisors (see below), whose sum is σ = 2076958800. Its totient is φ = 316488576.

The previous prime is 857157079. The next prime is 857157083. The reversal of 857157080 is 80751758.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857157083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 823670 + ... + 824709.

Almost surely, 2^857157080 is an apocalyptic number.

It is an amenable number.

857157080 is an abundant number, since it is smaller than the sum of its proper divisors (1219801720).

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

857157080 is a wasteful number, since it uses less digits than its factorization.

857157080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648403 (or 1648399 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 41.

The square root of 857157080 is about 29277.2450889765. The cubic root of 857157080 is about 949.9195056452.

The spelling of 857157080 in words is "eight hundred fifty-seven million, one hundred fifty-seven thousand, eighty".