22228608 has 64 divisors (see below), whose sum is σ = 59706720. Its totient is φ = 7326720.

The previous prime is 22228567. The next prime is 22228621. The reversal of 22228608 is 80682222.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×22228608² = 988222027235328, which contains 22 as substring.

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, 40818 + ... + 41358.

Almost surely, 2^22228608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22228608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29853360).

22228608 is an abundant number, since it is smaller than the sum of its proper divisors (37478112).

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

22228608 is a wasteful number, since it uses less digits than its factorization.

22228608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665 (or 653 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 22228608 is about 4714.7224732745. The cubic root of 22228608 is about 281.1711490560.

The spelling of 22228608 in words is "twenty-two million, two hundred twenty-eight thousand, six hundred eight".