402864804 has 36 divisors (see below), whose sum is σ = 1021634796. Its totient is φ = 133855488.

The previous prime is 402864799. The next prime is 402864817. The reversal of 402864804 is 408468204.

402864804 is a `hidden beast` number, since 4 + 0 + 2 + 8 + 648 + 0 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 158004900 + 244859904 = 12570^2 + 15648^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6609 + ... + 29144.

Almost surely, 2^402864804 is an apocalyptic number.

It is an amenable number.

402864804 is an abundant number, since it is smaller than the sum of its proper divisors (618769992).

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

402864804 is a wasteful number, since it uses less digits than its factorization.

402864804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36076 (or 36071 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

The square root of 402864804 is about 20071.4923212002. The cubic root of 402864804 is about 738.5611217166.

The spelling of 402864804 in words is "four hundred two million, eight hundred sixty-four thousand, eight hundred four".