22955520 has 240 divisors, whose sum is σ = 86766768. Its totient is φ = 5160960.

The previous prime is 22955489. The next prime is 22955521. The reversal of 22955520 is 2555922.

It is a tau number, because it is divible by the number of its divisors (240).

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 (22955521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 376290 + ... + 376350.

Almost surely, 2^22955520 is an apocalyptic number.

22955520 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 22955520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43383384).

22955520 is an abundant number, since it is smaller than the sum of its proper divisors (63811248).

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

22955520 is an equidigital number, since it uses as much as digits as its factorization.

22955520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 22955520 is about 4791.1919185105. The cubic root of 22955520 is about 284.2032532974.

The spelling of 22955520 in words is "twenty-two million, nine hundred fifty-five thousand, five hundred twenty".