21832924 has 6 divisors (see below), whose sum is σ = 38207624. Its totient is φ = 10916460.

The previous prime is 21832907. The next prime is 21832933. The reversal of 21832924 is 42923812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2729112 + ... + 2729119.

Almost surely, 2^21832924 is an apocalyptic number.

It is an amenable number.

21832924 is a deficient number, since it is larger than the sum of its proper divisors (16374700).

21832924 is a wasteful number, since it uses less digits than its factorization.

21832924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5458235 (or 5458233 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 21832924 is about 4672.5714547773. The cubic root of 21832924 is about 279.4928063108.

The spelling of 21832924 in words is "twenty-one million, eight hundred thirty-two thousand, nine hundred twenty-four".