22645560 has 64 divisors (see below), whose sum is σ = 77644800. Its totient is φ = 5175936.

The previous prime is 22645559. The next prime is 22645561. The reversal of 22645560 is 6554622.

It is an interprime number because it is at equal distance from previous prime (22645559) and next prime (22645561).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22645561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12640 + ... + 14319.

It is an arithmetic number, because the mean of its divisors is an integer number (1213200).

Almost surely, 2^22645560 is an apocalyptic number.

22645560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22645560 is an abundant number, since it is smaller than the sum of its proper divisors (54999240).

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

22645560 is a wasteful number, since it uses less digits than its factorization.

22645560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26980 (or 26976 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 22645560 is about 4758.7351260603. The cubic root of 22645560 is about 282.9182881208.

The spelling of 22645560 in words is "twenty-two million, six hundred forty-five thousand, five hundred sixty".