857144022 has 16 divisors (see below), whose sum is σ = 1959186432. Its totient is φ = 244898280.

The previous prime is 857144009. The next prime is 857144051. The reversal of 857144022 is 220441758.

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, 10204054 + ... + 10204137.

It is an arithmetic number, because the mean of its divisors is an integer number (122449152).

Almost surely, 2^857144022 is an apocalyptic number.

857144022 is an abundant number, since it is smaller than the sum of its proper divisors (1102042410).

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

857144022 is a wasteful number, since it uses less digits than its factorization.

857144022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20408203.

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 857144022 is about 29277.0220821722. The cubic root of 857144022 is about 949.9146819040.

The spelling of 857144022 in words is "eight hundred fifty-seven million, one hundred forty-four thousand, twenty-two".