22740880 has 20 divisors (see below), whose sum is σ = 52872732. Its totient is φ = 9096320.

The previous prime is 22740877. The next prime is 22740881. The reversal of 22740880 is 8804722.

It can be written as a sum of positive squares in 2 ways, for example, as 8573184 + 14167696 = 2928^2 + 3764^2 .

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

It is not an unprimeable number, because it can be changed into a prime (22740881) 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, 142051 + ... + 142210.

Almost surely, 2^22740880 is an apocalyptic number.

22740880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22740880 is an abundant number, since it is smaller than the sum of its proper divisors (30131852).

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

22740880 is a wasteful number, since it uses less digits than its factorization.

22740880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284274 (or 284268 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 22740880 is about 4768.7398754807. The cubic root of 22740880 is about 283.3146869697.

The spelling of 22740880 in words is "twenty-two million, seven hundred forty thousand, eight hundred eighty".