400313256 has 32 divisors (see below), whose sum is σ = 1143752640. Its totient is φ = 114375168.

The previous prime is 400313237. The next prime is 400313257. The reversal of 400313256 is 652313004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (400313257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1191241 + ... + 1191576.

It is an arithmetic number, because the mean of its divisors is an integer number (35742270).

Almost surely, 2^400313256 is an apocalyptic number.

It is an amenable number.

400313256 is an abundant number, since it is smaller than the sum of its proper divisors (743439384).

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

400313256 is a wasteful number, since it uses less digits than its factorization.

400313256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382833 (or 2382829 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 400313256 is about 20007.8298673294. The cubic root of 400313256 is about 736.9985903685.

The spelling of 400313256 in words is "four hundred million, three hundred thirteen thousand, two hundred fifty-six".