22732880 has 20 divisors (see below), whose sum is σ = 52854132. Its totient is φ = 9093120.

The previous prime is 22732867. The next prime is 22732883. The reversal of 22732880 is 8823722.

It can be written as a sum of positive squares in 2 ways, for example, as 5626384 + 17106496 = 2372^2 + 4136^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22732883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142001 + ... + 142160.

Almost surely, 2^22732880 is an apocalyptic number.

22732880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22732880 is an abundant number, since it is smaller than the sum of its proper divisors (30121252).

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

22732880 is a wasteful number, since it uses less digits than its factorization.

22732880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284174 (or 284168 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 22732880 is about 4767.9010056837. The cubic root of 22732880 is about 283.2814607075.

The spelling of 22732880 in words is "twenty-two million, seven hundred thirty-two thousand, eight hundred eighty".