22885440 has 112 divisors (see below), whose sum is σ = 75102720. Its totient is φ = 5898240.

The previous prime is 22885433. The next prime is 22885469. The reversal of 22885440 is 4458822.

It is a happy number.

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, 29376 + ... + 30144.

It is an arithmetic number, because the mean of its divisors is an integer number (670560).

Almost surely, 2^22885440 is an apocalyptic number.

22885440 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 22885440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37551360).

22885440 is an abundant number, since it is smaller than the sum of its proper divisors (52217280).

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

22885440 is a wasteful number, since it uses less digits than its factorization.

22885440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820 (or 810 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 33.

The square root of 22885440 is about 4783.8729080108. The cubic root of 22885440 is about 283.9137475294.

The spelling of 22885440 in words is "twenty-two million, eight hundred eighty-five thousand, four hundred forty".