22513928 has 16 divisors (see below), whose sum is σ = 42930000. Its totient is φ = 11065936.

The previous prime is 22513919. The next prime is 22513951. The reversal of 22513928 is 82931522.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22513894 and 22513903.

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, 23378 + ... + 24321.

It is an arithmetic number, because the mean of its divisors is an integer number (2683125).

Almost surely, 2^22513928 is an apocalyptic number.

It is an amenable number.

22513928 is a deficient number, since it is larger than the sum of its proper divisors (20416072).

22513928 is a wasteful number, since it uses less digits than its factorization.

22513928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47764 (or 47760 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 22513928 is about 4744.8844032284. The cubic root of 22513928 is about 282.3690488700.

The spelling of 22513928 in words is "twenty-two million, five hundred thirteen thousand, nine hundred twenty-eight".