22520432 has 40 divisors (see below), whose sum is σ = 47913600. Its totient is φ = 10169280.

The previous prime is 22520431. The next prime is 22520437. The reversal of 22520432 is 23402522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22520431) 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, 34703 + ... + 35345.

It is an arithmetic number, because the mean of its divisors is an integer number (1197840).

Almost surely, 2^22520432 is an apocalyptic number.

22520432 is a gapful number since it is divisible by the number (22) 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 22520432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23956800).

22520432 is an abundant number, since it is smaller than the sum of its proper divisors (25393168).

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

22520432 is a wasteful number, since it uses less digits than its factorization.

22520432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 855 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 22520432 is about 4745.5697234368. The cubic root of 22520432 is about 282.3962372468.

Adding to 22520432 its reverse (23402522), we get a palindrome (45922954).

The spelling of 22520432 in words is "twenty-two million, five hundred twenty thousand, four hundred thirty-two".