16866812 has 12 divisors (see below), whose sum is σ = 29683080. Its totient is φ = 8385936.

The previous prime is 16866809. The next prime is 16866827. The reversal of 16866812 is 21866861.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 11063 + ... + 12494.

It is an arithmetic number, because the mean of its divisors is an integer number (2473590).

Almost surely, 2^16866812 is an apocalyptic number.

It is an amenable number.

16866812 is a deficient number, since it is larger than the sum of its proper divisors (12816268).

16866812 is a wasteful number, since it uses less digits than its factorization.

16866812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23740 (or 23738 counting only the distinct ones).

The product of its digits is 27648, while the sum is 38.

The square root of 16866812 is about 4106.9224487443. The cubic root of 16866812 is about 256.4549000068.

The spelling of 16866812 in words is "sixteen million, eight hundred sixty-six thousand, eight hundred twelve".