21883612 has 12 divisors (see below), whose sum is σ = 38364256. Its totient is φ = 10922400.

The previous prime is 21883601. The next prime is 21883619. The reversal of 21883612 is 21638812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21883619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2148 + ... + 6955.

Almost surely, 2^21883612 is an apocalyptic number.

It is an amenable number.

21883612 is a deficient number, since it is larger than the sum of its proper divisors (16480644).

21883612 is a wasteful number, since it uses less digits than its factorization.

21883612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9708 (or 9706 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 21883612 is about 4677.9923043973. The cubic root of 21883612 is about 279.7089322257.

The spelling of 21883612 in words is "twenty-one million, eight hundred eighty-three thousand, six hundred twelve".