400522336 has 24 divisors (see below), whose sum is σ = 809842320. Its totient is φ = 194848128.

The previous prime is 400522319. The next prime is 400522351. The reversal of 400522336 is 633225004.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 400522336.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167956 + ... + 170323.

It is an arithmetic number, because the mean of its divisors is an integer number (33743430).

Almost surely, 2^400522336 is an apocalyptic number.

It is an amenable number.

400522336 is an abundant number, since it is smaller than the sum of its proper divisors (409319984).

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

400522336 is a wasteful number, since it uses less digits than its factorization.

400522336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338326 (or 338318 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 400522336 is about 20013.0541397359. The cubic root of 400522336 is about 737.1268772737.

The spelling of 400522336 in words is "four hundred million, five hundred twenty-two thousand, three hundred thirty-six".