857913100 has 72 divisors (see below), whose sum is σ = 2065492800. Its totient is φ = 306657600.

The previous prime is 857913073. The next prime is 857913103. The reversal of 857913100 is 1319758.

It is a happy number.

It is a super-2 number, since 2×857913100² = 1472029774303220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (857913103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58291 + ... + 71509.

It is an arithmetic number, because the mean of its divisors is an integer number (28687400).

Almost surely, 2^857913100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 857913100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1032746400).

857913100 is an abundant number, since it is smaller than the sum of its proper divisors (1207579700).

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

857913100 is a wasteful number, since it uses less digits than its factorization.

857913100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13303 (or 13296 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 857913100 is about 29290.1536356503. The cubic root of 857913100 is about 950.1987026653.

The spelling of 857913100 in words is "eight hundred fifty-seven million, nine hundred thirteen thousand, one hundred".