857418222 has 16 divisors (see below), whose sum is σ = 1815709392. Its totient is φ = 268993920.

The previous prime is 857418209. The next prime is 857418253. The reversal of 857418222 is 222814758.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4202929 + ... + 4203132.

It is an arithmetic number, because the mean of its divisors is an integer number (113481837).

Almost surely, 2^857418222 is an apocalyptic number.

857418222 is an abundant number, since it is smaller than the sum of its proper divisors (958291170).

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

857418222 is a wasteful number, since it uses less digits than its factorization.

857418222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8406083.

The product of its digits is 71680, while the sum is 39.

The square root of 857418222 is about 29281.7045610395. The cubic root of 857418222 is about 950.0159635360.

It can be divided in two parts, 8574 and 18222, that added together give a triangular number (26796 = T₂₃₁).

The spelling of 857418222 in words is "eight hundred fifty-seven million, four hundred eighteen thousand, two hundred twenty-two".