21822932 has 6 divisors (see below), whose sum is σ = 38190138. Its totient is φ = 10911464.

The previous prime is 21822923. The next prime is 21822943. The reversal of 21822932 is 23922812.

It can be written as a sum of positive squares in only one way, i.e., 21659716 + 163216 = 4654^2 + 404^2 .

It is a super-2 number, since 2×21822932² = 952480722153248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21822895 and 21822904.

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, 2727863 + ... + 2727870.

It is an arithmetic number, because the mean of its divisors is an integer number (6365023).

Almost surely, 2^21822932 is an apocalyptic number.

It is an amenable number.

21822932 is a deficient number, since it is larger than the sum of its proper divisors (16367206).

21822932 is a wasteful number, since it uses less digits than its factorization.

21822932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5455737 (or 5455735 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 21822932 is about 4671.5021138816. The cubic root of 21822932 is about 279.4501624844.

The spelling of 21822932 in words is "twenty-one million, eight hundred twenty-two thousand, nine hundred thirty-two".