16938866 has 16 divisors (see below), whose sum is σ = 29090880. Its totient is φ = 7246320.

The previous prime is 16938839. The next prime is 16938881. The reversal of 16938866 is 66883961.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16938866.

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, 14720 + ... + 15828.

It is an arithmetic number, because the mean of its divisors is an integer number (1818180).

Almost surely, 2^16938866 is an apocalyptic number.

16938866 is a deficient number, since it is larger than the sum of its proper divisors (12152014).

16938866 is a wasteful number, since it uses less digits than its factorization.

16938866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209.

The product of its digits is 373248, while the sum is 47.

The square root of 16938866 is about 4115.6853621238. The cubic root of 16938866 is about 256.8195678228.

The spelling of 16938866 in words is "sixteen million, nine hundred thirty-eight thousand, eight hundred sixty-six".