16339866 has 32 divisors (see below), whose sum is σ = 33981120. Its totient is φ = 5233536.

The previous prime is 16339811. The next prime is 16339877. The reversal of 16339866 is 66893361.

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, 19345 + ... + 20171.

It is an arithmetic number, because the mean of its divisors is an integer number (1061910).

Almost surely, 2^16339866 is an apocalyptic number.

16339866 is an abundant number, since it is smaller than the sum of its proper divisors (17641254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16339866 is a wasteful number, since it uses less digits than its factorization.

16339866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958.

The product of its digits is 139968, while the sum is 42.

The square root of 16339866 is about 4042.2600114292. The cubic root of 16339866 is about 253.7559086849.

It can be divided in two parts, 16339 and 866, that added together give a triangular number (17205 = T₁₈₅).

The spelling of 16339866 in words is "sixteen million, three hundred thirty-nine thousand, eight hundred sixty-six".