400216748 has 12 divisors (see below), whose sum is σ = 700519680. Its totient is φ = 200068272.

The previous prime is 400216709. The next prime is 400216757. The reversal of 400216748 is 847612004.

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, 32018 + ... + 42726.

It is an arithmetic number, because the mean of its divisors is an integer number (58376640).

Almost surely, 2^400216748 is an apocalyptic number.

It is an amenable number.

400216748 is a deficient number, since it is larger than the sum of its proper divisors (300302932).

400216748 is a wasteful number, since it uses less digits than its factorization.

400216748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20056 (or 20054 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 400216748 is about 20005.4179661411. The cubic root of 400216748 is about 736.9393601070.

The spelling of 400216748 in words is "four hundred million, two hundred sixteen thousand, seven hundred forty-eight".