400564056 has 32 divisors (see below), whose sum is σ = 1016360640. Its totient is φ = 131527968.

The previous prime is 400563937. The next prime is 400564063. The reversal of 400564056 is 650465004.

It is a super-2 number, since 2×400564056² = 320903125918342272, which contains 22 as substring.

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, 122946 + ... + 126161.

It is an arithmetic number, because the mean of its divisors is an integer number (31761270).

Almost surely, 2^400564056 is an apocalyptic number.

It is an amenable number.

400564056 is an abundant number, since it is smaller than the sum of its proper divisors (615796584).

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

400564056 is a wasteful number, since it uses less digits than its factorization.

400564056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249183 (or 249179 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 400564056 is about 20014.0964322649. The cubic root of 400564056 is about 737.1524704078.

The spelling of 400564056 in words is "four hundred million, five hundred sixty-four thousand, fifty-six".