400852868 has 24 divisors (see below), whose sum is σ = 756903000. Its totient is φ = 184654080.

The previous prime is 400852867. The next prime is 400852883. The reversal of 400852868 is 868258004.

It can be written as a sum of positive squares in 4 ways, for example, as 27899524 + 372953344 = 5282^2 + 19312^2 .

It is not an unprimeable number, because it can be changed into a prime (400852867) 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, 21008 + ... + 35256.

It is an arithmetic number, because the mean of its divisors is an integer number (31537625).

Almost surely, 2^400852868 is an apocalyptic number.

It is an amenable number.

400852868 is a deficient number, since it is larger than the sum of its proper divisors (356050132).

400852868 is a wasteful number, since it uses less digits than its factorization.

400852868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14807 (or 14805 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 41.

The square root of 400852868 is about 20021.3103467281. The cubic root of 400852868 is about 737.3295934164.

The spelling of 400852868 in words is "four hundred million, eight hundred fifty-two thousand, eight hundred sixty-eight".