22865920 has 192 divisors, whose sum is σ = 70761600. Its totient is φ = 6881280.

The previous prime is 22865903. The next prime is 22865939. The reversal of 22865920 is 2956822.

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, 788466 + ... + 788494.

It is an arithmetic number, because the mean of its divisors is an integer number (368550).

Almost surely, 2^22865920 is an apocalyptic number.

22865920 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 22865920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35380800).

22865920 is an abundant number, since it is smaller than the sum of its proper divisors (47895680).

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

22865920 is a wasteful number, since it uses less digits than its factorization.

22865920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 22865920 is about 4781.8322848046. The cubic root of 22865920 is about 283.8330037207.

The spelling of 22865920 in words is "twenty-two million, eight hundred sixty-five thousand, nine hundred twenty".