22557380 has 24 divisors (see below), whose sum is σ = 48527640. Its totient is φ = 8802560.

The previous prime is 22557371. The next prime is 22557391. The reversal of 22557380 is 8375522.

It can be written as a sum of positive squares in 4 ways, for example, as 1249924 + 21307456 = 1118^2 + 4616^2 .

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, 12935 + ... + 14574.

It is an arithmetic number, because the mean of its divisors is an integer number (2021985).

Almost surely, 2^22557380 is an apocalyptic number.

22557380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22557380 is an abundant number, since it is smaller than the sum of its proper divisors (25970260).

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

22557380 is a wasteful number, since it uses less digits than its factorization.

22557380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27559 (or 27557 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 22557380 is about 4749.4610220529. The cubic root of 22557380 is about 282.5505900470.

The spelling of 22557380 in words is "twenty-two million, five hundred fifty-seven thousand, three hundred eighty".