16399318 has 32 divisors (see below), whose sum is σ = 28274400. Its totient is φ = 7070976.

The previous prime is 16399307. The next prime is 16399343. The reversal of 16399318 is 81399361.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43780 + ... + 44152.

It is an arithmetic number, because the mean of its divisors is an integer number (883575).

Almost surely, 2^16399318 is an apocalyptic number.

16399318 is a deficient number, since it is larger than the sum of its proper divisors (11875082).

16399318 is a wasteful number, since it uses less digits than its factorization.

16399318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496.

The product of its digits is 34992, while the sum is 40.

The square root of 16399318 is about 4049.6071414398. The cubic root of 16399318 is about 254.0632966851.

The spelling of 16399318 in words is "sixteen million, three hundred ninety-nine thousand, three hundred eighteen".