16944538 has 16 divisors (see below), whose sum is σ = 28256256. Its totient is φ = 7567920.

The previous prime is 16944527. The next prime is 16944559. The reversal of 16944538 is 83544961.

It is a self number, because there is not a number n which added to its sum of digits gives 16944538.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9706 + ... + 11317.

It is an arithmetic number, because the mean of its divisors is an integer number (1766016).

Almost surely, 2^16944538 is an apocalyptic number.

16944538 is a deficient number, since it is larger than the sum of its proper divisors (11311718).

16944538 is a wasteful number, since it uses less digits than its factorization.

16944538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21069.

The product of its digits is 103680, while the sum is 40.

The square root of 16944538 is about 4116.3743755883. The cubic root of 16944538 is about 256.8482300726.

The spelling of 16944538 in words is "sixteen million, nine hundred forty-four thousand, five hundred thirty-eight".