400315232 has 24 divisors (see below), whose sum is σ = 790171200. Its totient is φ = 199636864.

The previous prime is 400315231. The next prime is 400315243. The reversal of 400315232 is 232513004.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400315231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3632 + ... + 28527.

It is an arithmetic number, because the mean of its divisors is an integer number (32923800).

Almost surely, 2^400315232 is an apocalyptic number.

It is an amenable number.

400315232 is a deficient number, since it is larger than the sum of its proper divisors (389855968).

400315232 is a wasteful number, since it uses less digits than its factorization.

400315232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32558 (or 32550 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 400315232 is about 20007.8792479363. The cubic root of 400315232 is about 736.9998030079. Note that the first 3 decimals are identical.

Adding to 400315232 its reverse (232513004), we get a palindrome (632828236).

The spelling of 400315232 in words is "four hundred million, three hundred fifteen thousand, two hundred thirty-two".