22681880 has 64 divisors (see below), whose sum is σ = 56064960. Its totient is φ = 8206848.

The previous prime is 22681849. The next prime is 22681931. The reversal of 22681880 is 8818622.

It is a self number, because there is not a number n which added to its sum of digits gives 22681880.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27149 + ... + 27971.

It is an arithmetic number, because the mean of its divisors is an integer number (876015).

Almost surely, 2^22681880 is an apocalyptic number.

22681880 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 22681880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28032480).

22681880 is an abundant number, since it is smaller than the sum of its proper divisors (33383080).

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

22681880 is a wasteful number, since it uses less digits than its factorization.

22681880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900 (or 896 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 22681880 is about 4762.5497372731. The cubic root of 22681880 is about 283.0694598240.

The spelling of 22681880 in words is "twenty-two million, six hundred eighty-one thousand, eight hundred eighty".