22275520 has 56 divisors (see below), whose sum is σ = 53510688. Its totient is φ = 8832000.

The previous prime is 22275503. The next prime is 22275521. The reversal of 22275520 is 2557222.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22275521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48090 + ... + 48550.

It is an arithmetic number, because the mean of its divisors is an integer number (955548).

Almost surely, 2^22275520 is an apocalyptic number.

22275520 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 22275520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26755344).

22275520 is an abundant number, since it is smaller than the sum of its proper divisors (31235168).

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

22275520 is a wasteful number, since it uses less digits than its factorization.

22275520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629 (or 619 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 22275520 is about 4719.6949053938. The cubic root of 22275520 is about 281.3688077477.

The spelling of 22275520 in words is "twenty-two million, two hundred seventy-five thousand, five hundred twenty".