22440560 has 20 divisors (see below), whose sum is σ = 52174488. Its totient is φ = 8976192.

The previous prime is 22440553. The next prime is 22440581. The reversal of 22440560 is 6504422.

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

It is a super-2 number, since 2×22440560² = 1007157466227200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140174 + ... + 140333.

Almost surely, 2^22440560 is an apocalyptic number.

22440560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22440560 is an abundant number, since it is smaller than the sum of its proper divisors (29733928).

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

22440560 is a wasteful number, since it uses less digits than its factorization.

22440560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280520 (or 280514 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 22440560 is about 4737.1468206084. The cubic root of 22440560 is about 282.0619886195.

Adding to 22440560 its reverse (6504422), we get a palindrome (28944982).

The spelling of 22440560 in words is "twenty-two million, four hundred forty thousand, five hundred sixty".