857946340 has 24 divisors (see below), whose sum is σ = 1803900672. Its totient is φ = 342756960.

The previous prime is 857946337. The next prime is 857946347. The reversal of 857946340 is 43649758.

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 not an unprimeable number, because it can be changed into a prime (857946347) 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, 9396 + ... + 42475.

It is an arithmetic number, because the mean of its divisors is an integer number (75162528).

Almost surely, 2^857946340 is an apocalyptic number.

It is an amenable number.

857946340 is an abundant number, since it is smaller than the sum of its proper divisors (945954332).

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

857946340 is a wasteful number, since it uses less digits than its factorization.

857946340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52707 (or 52705 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 46.

The square root of 857946340 is about 29290.7210563345. The cubic root of 857946340 is about 950.2109743810.

The spelling of 857946340 in words is "eight hundred fifty-seven million, nine hundred forty-six thousand, three hundred forty".