22258628 has 24 divisors (see below), whose sum is σ = 44799552. Its totient is φ = 9478944.

The previous prime is 22258619. The next prime is 22258667. The reversal of 22258628 is 82685222.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2126 + ... + 7002.

It is an arithmetic number, because the mean of its divisors is an integer number (1866648).

Almost surely, 2^22258628 is an apocalyptic number.

22258628 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22258628 is an abundant number, since it is smaller than the sum of its proper divisors (22540924).

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

22258628 is a wasteful number, since it uses less digits than its factorization.

22258628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5051 (or 5049 counting only the distinct ones).

The product of its digits is 30720, while the sum is 35.

The square root of 22258628 is about 4717.9050435548. The cubic root of 22258628 is about 281.2976671142.

The spelling of 22258628 in words is "twenty-two million, two hundred fifty-eight thousand, six hundred twenty-eight".