21882532 has 12 divisors (see below), whose sum is σ = 43765120. Its totient is φ = 9378216.

The previous prime is 21882527. The next prime is 21882541. The reversal of 21882532 is 23528812.

21882532 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 21882494 and 21882503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390732 + ... + 390787.

Almost surely, 2^21882532 is an apocalyptic number.

It is an amenable number.

21882532 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21882532 is a wasteful number, since it uses less digits than its factorization.

21882532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781530 (or 781528 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 21882532 is about 4677.8768688370. The cubic root of 21882532 is about 279.7043307517.

The spelling of 21882532 in words is "twenty-one million, eight hundred eighty-two thousand, five hundred thirty-two".