22028608 has 28 divisors (see below), whose sum is σ = 49958752. Its totient is φ = 9440640.

The previous prime is 22028593. The next prime is 22028621. The reversal of 22028608 is 80682022.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (28).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent 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, 24138 + ... + 25033.

Almost surely, 2^22028608 is an apocalyptic number.

22028608 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22028608 is an abundant number, since it is smaller than the sum of its proper divisors (27930144).

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

22028608 is an equidigital number, since it uses as much as digits as its factorization.

22028608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49190 (or 49180 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 22028608 is about 4693.4643921095. The cubic root of 22028608 is about 280.3253361265.

The spelling of 22028608 in words is "twenty-two million, twenty-eight thousand, six hundred eight".