22404880 has 20 divisors (see below), whose sum is σ = 52091532. Its totient is φ = 8961920.

The previous prime is 22404871. The next prime is 22404881. The reversal of 22404880 is 8840422.

It can be written as a sum of positive squares in 2 ways, for example, as 11751184 + 10653696 = 3428^2 + 3264^2 .

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 (22404881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139951 + ... + 140110.

Almost surely, 2^22404880 is an apocalyptic number.

22404880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22404880 is an abundant number, since it is smaller than the sum of its proper divisors (29686652).

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

22404880 is a wasteful number, since it uses less digits than its factorization.

22404880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280074 (or 280068 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 22404880 is about 4733.3793424994. The cubic root of 22404880 is about 281.9124185211.

The spelling of 22404880 in words is "twenty-two million, four hundred four thousand, eight hundred eighty".