402504264 has 24 divisors (see below), whose sum is σ = 1090115910. Its totient is φ = 134168064.

The previous prime is 402504259. The next prime is 402504307. The reversal of 402504264 is 462405204.

It can be written as a sum of positive squares in only one way, i.e., 235008900 + 167495364 = 15330^2 + 12942^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2795097 + ... + 2795240.

Almost surely, 2^402504264 is an apocalyptic number.

It is an amenable number.

402504264 is an abundant number, since it is smaller than the sum of its proper divisors (687611646).

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

402504264 is a wasteful number, since it uses less digits than its factorization.

402504264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5590349 (or 5590342 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 402504264 is about 20062.5089158859. The cubic root of 402504264 is about 738.3407332233.

Adding to 402504264 its reverse (462405204), we get a palindrome (864909468).

The spelling of 402504264 in words is "four hundred two million, five hundred four thousand, two hundred sixty-four".