21822832 has 20 divisors (see below), whose sum is σ = 44769456. Its totient is φ = 10269440.

The previous prime is 21822809. The next prime is 21822841. The reversal of 21822832 is 23822812.

It is a self number, because there is not a number n which added to its sum of digits gives 21822832.

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, 39844 + ... + 40387.

Almost surely, 2^21822832 is an apocalyptic number.

It is an amenable number.

21822832 is an abundant number, since it is smaller than the sum of its proper divisors (22946624).

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

21822832 is a wasteful number, since it uses less digits than its factorization.

21822832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80256 (or 80250 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 21822832 is about 4671.4914106739. The cubic root of 21822832 is about 279.4497356390.

The spelling of 21822832 in words is "twenty-one million, eight hundred twenty-two thousand, eight hundred thirty-two".