402064456 has 16 divisors (see below), whose sum is σ = 758231100. Its totient is φ = 199869504.

The previous prime is 402064441. The next prime is 402064471. The reversal of 402064456 is 654460204.

It is an interprime number because it is at equal distance from previous prime (402064441) and next prime (402064471).

It can be written as a sum of positive squares in 2 ways, for example, as 339812356 + 62252100 = 18434^2 + 7890^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143871 + ... + 146638.

Almost surely, 2^402064456 is an apocalyptic number.

It is an amenable number.

402064456 is a deficient number, since it is larger than the sum of its proper divisors (356166644).

402064456 is a wasteful number, since it uses less digits than its factorization.

402064456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290688 (or 290684 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 402064456 is about 20051.5449778814. The cubic root of 402064456 is about 738.0717120504.

The spelling of 402064456 in words is "four hundred two million, sixty-four thousand, four hundred fifty-six".