22645028 has 12 divisors (see below), whose sum is σ = 45290112. Its totient is φ = 9705000.

The previous prime is 22645019. The next prime is 22645039. The reversal of 22645028 is 82054622.

22645028 is an admirable number.

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, 404348 + ... + 404403.

It is an arithmetic number, because the mean of its divisors is an integer number (3774176).

Almost surely, 2^22645028 is an apocalyptic number.

22645028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22645028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22645028 is a wasteful number, since it uses less digits than its factorization.

22645028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808762 (or 808760 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 22645028 is about 4758.6792285255. The cubic root of 22645028 is about 282.9160726209.

It can be divided in two parts, 226 and 45028, that added together give a palindrome (45254).

The spelling of 22645028 in words is "twenty-two million, six hundred forty-five thousand, twenty-eight".