22561960 has 16 divisors (see below), whose sum is σ = 50764500. Its totient is φ = 9024768.

The previous prime is 22561951. The next prime is 22561961. The reversal of 22561960 is 6916522.

It can be written as a sum of positive squares in 2 ways, for example, as 21399876 + 1162084 = 4626^2 + 1078^2 .

It is not an unprimeable number, because it can be changed into a prime (22561961) 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, 281985 + ... + 282064.

Almost surely, 2^22561960 is an apocalyptic number.

22561960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22561960 is an abundant number, since it is smaller than the sum of its proper divisors (28202540).

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

22561960 is a wasteful number, since it uses less digits than its factorization.

22561960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564060 (or 564056 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 22561960 is about 4749.9431575546. The cubic root of 22561960 is about 282.5697115663.

The spelling of 22561960 in words is "twenty-two million, five hundred sixty-one thousand, nine hundred sixty".