402863664 has 40 divisors (see below), whose sum is σ = 1189408000. Its totient is φ = 115103808.

The previous prime is 402863647. The next prime is 402863677. The reversal of 402863664 is 466368204.

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, 599164 + ... + 599835.

It is an arithmetic number, because the mean of its divisors is an integer number (29735200).

Almost surely, 2^402863664 is an apocalyptic number.

It is an amenable number.

402863664 is an abundant number, since it is smaller than the sum of its proper divisors (786544336).

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

402863664 is a wasteful number, since it uses less digits than its factorization.

402863664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199017 (or 1199011 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 39.

The square root of 402863664 is about 20071.4639226938. The cubic root of 402863664 is about 738.5604250722.

The spelling of 402863664 in words is "four hundred two million, eight hundred sixty-three thousand, six hundred sixty-four".