21632422 has 24 divisors (see below), whose sum is σ = 38290320. Its totient is φ = 9137520.

The previous prime is 21632417. The next prime is 21632447. The reversal of 21632422 is 22423612.

It is a junction number, because it is equal to n+sod(n) for n = 21632393 and 21632402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5404 + ... + 8512.

It is an arithmetic number, because the mean of its divisors is an integer number (1595430).

Almost surely, 2^21632422 is an apocalyptic number.

21632422 is a deficient number, since it is larger than the sum of its proper divisors (16657898).

21632422 is a wasteful number, since it uses less digits than its factorization.

21632422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3196 (or 3189 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 21632422 is about 4651.0667593575. The cubic root of 21632422 is about 278.6346025723.

The spelling of 21632422 in words is "twenty-one million, six hundred thirty-two thousand, four hundred twenty-two".