22565480 has 96 divisors (see below), whose sum is σ = 61252200. Its totient is φ = 7451136.

The previous prime is 22565479. The next prime is 22565503. The reversal of 22565480 is 8456522.

It can be written as a sum of positive squares in 4 ways, for example, as 19695844 + 2869636 = 4438^2 + 1694^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56642 + ... + 57038.

Almost surely, 2^22565480 is an apocalyptic number.

22565480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22565480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30626100).

22565480 is an abundant number, since it is smaller than the sum of its proper divisors (38686720).

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

22565480 is a wasteful number, since it uses less digits than its factorization.

22565480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 22565480 is about 4750.3136738535. The cubic root of 22565480 is about 282.5844058225.

The spelling of 22565480 in words is "twenty-two million, five hundred sixty-five thousand, four hundred eighty".