22553232 has 80 divisors (see below), whose sum is σ = 64162560. Its totient is φ = 6782976.

The previous prime is 22553231. The next prime is 22553233. The reversal of 22553232 is 23235522.

It is an interprime number because it is at equal distance from previous prime (22553231) and next prime (22553233).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (22553231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28944 + ... + 29712.

It is an arithmetic number, because the mean of its divisors is an integer number (802032).

Almost surely, 2^22553232 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 22553232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32081280).

22553232 is an abundant number, since it is smaller than the sum of its proper divisors (41609328).

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

22553232 is a wasteful number, since it uses less digits than its factorization.

22553232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840 (or 834 counting only the distinct ones).

The product of its digits is 3600, while the sum is 24.

The square root of 22553232 is about 4749.0243208474. The cubic root of 22553232 is about 282.5332698959.

Adding to 22553232 its reverse (23235522), we get a palindrome (45788754).

The spelling of 22553232 in words is "twenty-two million, five hundred fifty-three thousand, two hundred thirty-two".