402764004 has 36 divisors (see below), whose sum is σ = 1019338684. Its totient is φ = 134091072.

The previous prime is 402763993. The next prime is 402764039. The reversal of 402764004 is 400467204.

It can be written as a sum of positive squares in 2 ways, for example, as 290361600 + 112402404 = 17040^2 + 10602^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×402764004² = 324437685836224032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25194 + ... + 37950.

Almost surely, 2^402764004 is an apocalyptic number.

It is an amenable number.

402764004 is an abundant number, since it is smaller than the sum of its proper divisors (616574680).

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

402764004 is a wasteful number, since it uses less digits than its factorization.

402764004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13644 (or 13639 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 402764004 is about 20068.9811400579. The cubic root of 402764004 is about 738.4995186095.

The spelling of 402764004 in words is "four hundred two million, seven hundred sixty-four thousand, four".