22500028 has 24 divisors (see below), whose sum is σ = 42336000. Its totient is φ = 10429488.

The previous prime is 22500019. The next prime is 22500029. The reversal of 22500028 is 82000522.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 22499978 and 22500014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22500029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423 + ... + 6721.

It is an arithmetic number, because the mean of its divisors is an integer number (1764000).

Almost surely, 2^22500028 is an apocalyptic number.

It is an amenable number.

22500028 is a deficient number, since it is larger than the sum of its proper divisors (19835972).

22500028 is a wasteful number, since it uses less digits than its factorization.

22500028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6369 (or 6367 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 22500028 is about 4743.4194417108. The cubic root of 22500028 is about 282.3109257710.

The spelling of 22500028 in words is "twenty-two million, five hundred thousand, twenty-eight".