21922652 has 12 divisors (see below), whose sum is σ = 38419920. Its totient is φ = 10945536.

The previous prime is 21922651. The next prime is 21922661. The reversal of 21922652 is 25622912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21922651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488 + ... + 6639.

It is an arithmetic number, because the mean of its divisors is an integer number (3201660).

Almost surely, 2^21922652 is an apocalyptic number.

It is an amenable number.

21922652 is a deficient number, since it is larger than the sum of its proper divisors (16497268).

21922652 is a wasteful number, since it uses less digits than its factorization.

21922652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7900 (or 7898 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 21922652 is about 4682.1631752855. The cubic root of 21922652 is about 279.8751654408.

The spelling of 21922652 in words is "twenty-one million, nine hundred twenty-two thousand, six hundred fifty-two".