400792056 has 128 divisors (see below), whose sum is σ = 1211535360. Its totient is φ = 108057600.

The previous prime is 400792039. The next prime is 400792079. The reversal of 400792056 is 650297004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212590 + ... + 214466.

It is an arithmetic number, because the mean of its divisors is an integer number (9465120).

Almost surely, 2^400792056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400792056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (605767680).

400792056 is an abundant number, since it is smaller than the sum of its proper divisors (810743304).

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

400792056 is a wasteful number, since it uses less digits than its factorization.

400792056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965 (or 1961 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 400792056 is about 20019.7916073070. The cubic root of 400792056 is about 737.2923056246.

The spelling of 400792056 in words is "four hundred million, seven hundred ninety-two thousand, fifty-six".