21882956 has 12 divisors (see below), whose sum is σ = 38337768. Its totient is φ = 10929312.

The previous prime is 21882941. The next prime is 21882967. The reversal of 21882956 is 65928812.

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, 1895 + ... + 6881.

It is an arithmetic number, because the mean of its divisors is an integer number (3194814).

Almost surely, 2^21882956 is an apocalyptic number.

It is an amenable number.

21882956 is a deficient number, since it is larger than the sum of its proper divisors (16454812).

21882956 is a wasteful number, since it uses less digits than its factorization.

21882956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6088 (or 6086 counting only the distinct ones).

The product of its digits is 69120, while the sum is 41.

The square root of 21882956 is about 4677.9221883225. The cubic root of 21882956 is about 279.7061372743.

The spelling of 21882956 in words is "twenty-one million, eight hundred eighty-two thousand, nine hundred fifty-six".