16668384 has 24 divisors (see below), whose sum is σ = 43754760. Its totient is φ = 5556096.

The previous prime is 16668361. The next prime is 16668401. The reversal of 16668384 is 48386661.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86719 + ... + 86910.

It is an arithmetic number, because the mean of its divisors is an integer number (1823115).

Almost surely, 2^16668384 is an apocalyptic number.

It is an amenable number.

16668384 is an abundant number, since it is smaller than the sum of its proper divisors (27086376).

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

16668384 is a wasteful number, since it uses less digits than its factorization.

16668384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173642 (or 173634 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 16668384 is about 4082.6932287401. The cubic root of 16668384 is about 255.4452505547.

The spelling of 16668384 in words is "sixteen million, six hundred sixty-eight thousand, three hundred eighty-four".