22559472 has 150 divisors (see below), whose sum is σ = 71389032. Its totient is φ = 6873984.

The previous prime is 22559437. The next prime is 22559473. The reversal of 22559472 is 27495522.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22559473) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 218973 + ... + 219075.

Almost surely, 2^22559472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22559472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35694516).

22559472 is an abundant number, since it is smaller than the sum of its proper divisors (48829560).

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

22559472 is a wasteful number, since it uses less digits than its factorization.

22559472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 121 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 22559472 is about 4749.6812524632. The cubic root of 22559472 is about 282.5593244769.

The spelling of 22559472 in words is "twenty-two million, five hundred fifty-nine thousand, four hundred seventy-two".