22528680 has 128 divisors (see below), whose sum is σ = 73180800. Its totient is φ = 5529600.

The previous prime is 22528631. The next prime is 22528717. The reversal of 22528680 is 8682522.

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93360 + ... + 93600.

It is an arithmetic number, because the mean of its divisors is an integer number (571725).

Almost surely, 2^22528680 is an apocalyptic number.

22528680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22528680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36590400).

22528680 is an abundant number, since it is smaller than the sum of its proper divisors (50652120).

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

22528680 is a wasteful number, since it uses less digits than its factorization.

22528680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 22528680 is about 4746.4386649361. The cubic root of 22528680 is about 282.4307084605.

The spelling of 22528680 in words is "twenty-two million, five hundred twenty-eight thousand, six hundred eighty".