400338568 has 32 divisors (see below), whose sum is σ = 858888000. Its totient is φ = 171369792.

The previous prime is 400338563. The next prime is 400338629. The reversal of 400338568 is 865833004.

It is not an unprimeable number, because it can be changed into a prime (400338563) 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, 49258 + ... + 56806.

It is an arithmetic number, because the mean of its divisors is an integer number (26840250).

Almost surely, 2^400338568 is an apocalyptic number.

It is an amenable number.

400338568 is an abundant number, since it is smaller than the sum of its proper divisors (458549432).

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

400338568 is a wasteful number, since it uses less digits than its factorization.

400338568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8509 (or 8505 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 400338568 is about 20008.4624096906. The cubic root of 400338568 is about 737.0141236331.

The spelling of 400338568 in words is "four hundred million, three hundred thirty-eight thousand, five hundred sixty-eight".