402496864 has 48 divisors (see below), whose sum is σ = 987952896. Its totient is φ = 156816000.

The previous prime is 402496837. The next prime is 402496873. The reversal of 402496864 is 468694204.

It is a self number, because there is not a number n which added to its sum of digits gives 402496864.

It is a congruent number.

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, 79212 + ... + 84139.

It is an arithmetic number, because the mean of its divisors is an integer number (20582352).

Almost surely, 2^402496864 is an apocalyptic number.

402496864 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

402496864 is an abundant number, since it is smaller than the sum of its proper divisors (585456032).

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

402496864 is a wasteful number, since it uses less digits than its factorization.

402496864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163379 (or 163371 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 43.

The square root of 402496864 is about 20062.3244914442. The cubic root of 402496864 is about 738.3362084224.

The spelling of 402496864 in words is "four hundred two million, four hundred ninety-six thousand, eight hundred sixty-four".