400628416 has 14 divisors (see below), whose sum is σ = 794997140. Its totient is φ = 200314176.

The previous prime is 400628387. The next prime is 400628447. The reversal of 400628416 is 614826004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3129846 + ... + 3129973.

It is an arithmetic number, because the mean of its divisors is an integer number (56785510).

Almost surely, 2^400628416 is an apocalyptic number.

It is an amenable number.

400628416 is a deficient number, since it is larger than the sum of its proper divisors (394368724).

400628416 is an equidigital number, since it uses as much as digits as its factorization.

400628416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6259831 (or 6259821 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 400628416 is about 20015.7042344255. The cubic root of 400628416 is about 737.1919485650.

The spelling of 400628416 in words is "four hundred million, six hundred twenty-eight thousand, four hundred sixteen".