400413256 has 32 divisors (see below), whose sum is σ = 784909440. Its totient is φ = 191137408.

The previous prime is 400413241. The next prime is 400413263. The reversal of 400413256 is 652314004.

It is a self number, because there is not a number n which added to its sum of digits gives 400413256.

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, 111765 + ... + 115291.

It is an arithmetic number, because the mean of its divisors is an integer number (24528420).

Almost surely, 2^400413256 is an apocalyptic number.

400413256 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

400413256 is a deficient number, since it is larger than the sum of its proper divisors (384496184).

400413256 is a wasteful number, since it uses less digits than its factorization.

400413256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4173 (or 4169 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 400413256 is about 20010.3287329319. The cubic root of 400413256 is about 737.0599537483.

The spelling of 400413256 in words is "four hundred million, four hundred thirteen thousand, two hundred fifty-six".