21076368 has 40 divisors (see below), whose sum is σ = 54731616. Its totient is φ = 6988800.

The previous prime is 21076361. The next prime is 21076397. The reversal of 21076368 is 86367012.

It is not an unprimeable number, because it can be changed into a prime (21076361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9088 + ... + 11168.

Almost surely, 2^21076368 is an apocalyptic number.

It is an amenable number.

21076368 is an abundant number, since it is smaller than the sum of its proper divisors (33655248).

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

21076368 is a wasteful number, since it uses less digits than its factorization.

21076368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2303 (or 2297 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 21076368 is about 4590.9005652486. The cubic root of 21076368 is about 276.2264472184.

The spelling of 21076368 in words is "twenty-one million, seventy-six thousand, three hundred sixty-eight".