404020568 has 32 divisors (see below), whose sum is σ = 879958560. Its totient is φ = 170311680.

The previous prime is 404020559. The next prime is 404020571. The reversal of 404020568 is 865020404.

It is a self number, because there is not a number n which added to its sum of digits gives 404020568.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55721 + ... + 62552.

It is an arithmetic number, because the mean of its divisors is an integer number (27498705).

Almost surely, 2^404020568 is an apocalyptic number.

It is an amenable number.

404020568 is an abundant number, since it is smaller than the sum of its proper divisors (475937992).

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

404020568 is a wasteful number, since it uses less digits than its factorization.

404020568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118347 (or 118343 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 404020568 is about 20100.2628838530. The cubic root of 404020568 is about 739.2667243215.

The spelling of 404020568 in words is "four hundred four million, twenty thousand, five hundred sixty-eight".