22681560 has 64 divisors (see below), whose sum is σ = 74234880. Its totient is φ = 5498240.

The previous prime is 22681523. The next prime is 22681609. The reversal of 22681560 is 6518622.

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

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7272 + ... + 9911.

It is an arithmetic number, because the mean of its divisors is an integer number (1159920).

Almost surely, 2^22681560 is an apocalyptic number.

22681560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22681560 is an abundant number, since it is smaller than the sum of its proper divisors (51553320).

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

22681560 is a wasteful number, since it uses less digits than its factorization.

22681560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17208 (or 17204 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 22681560 is about 4762.5161417049. The cubic root of 22681560 is about 283.0681286196.

It can be divided in two parts, 2268 and 1560, that added together give a triangular number (3828 = T₈₇).

The spelling of 22681560 in words is "twenty-two million, six hundred eighty-one thousand, five hundred sixty".