400226656 has 24 divisors (see below), whose sum is σ = 796075560. Its totient is φ = 198048768.

The previous prime is 400226639. The next prime is 400226693. The reversal of 400226656 is 656622004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61366 + ... + 67573.

It is an arithmetic number, because the mean of its divisors is an integer number (33169815).

Almost surely, 2^400226656 is an apocalyptic number.

It is an amenable number.

400226656 is a deficient number, since it is larger than the sum of its proper divisors (395848904).

400226656 is a wasteful number, since it uses less digits than its factorization.

400226656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129046 (or 129038 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 400226656 is about 20005.6655975251. The cubic root of 400226656 is about 736.9454414242.

The spelling of 400226656 in words is "four hundred million, two hundred twenty-six thousand, six hundred fifty-six".