21923896 has 16 divisors (see below), whose sum is σ = 41157000. Its totient is φ = 10948704.

The previous prime is 21923833. The next prime is 21923903. The reversal of 21923896 is 69832912.

It is a happy number.

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, 12055 + ... + 13753.

Almost surely, 2^21923896 is an apocalyptic number.

It is an amenable number.

21923896 is a deficient number, since it is larger than the sum of its proper divisors (19233104).

21923896 is a wasteful number, since it uses less digits than its factorization.

21923896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318 (or 3314 counting only the distinct ones).

The product of its digits is 46656, while the sum is 40.

The square root of 21923896 is about 4682.2960179809. The cubic root of 21923896 is about 279.8804591756.

The spelling of 21923896 in words is "twenty-one million, nine hundred twenty-three thousand, eight hundred ninety-six".