22745232 has 80 divisors (see below), whose sum is σ = 67098880. Its totient is φ = 7371648.

The previous prime is 22745213. The next prime is 22745257. The reversal of 22745232 is 23254722.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 22745196 and 22745205.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15273 + ... + 16695.

It is an arithmetic number, because the mean of its divisors is an integer number (838736).

Almost surely, 2^22745232 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 22745232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33549440).

22745232 is an abundant number, since it is smaller than the sum of its proper divisors (44353648).

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

22745232 is a wasteful number, since it uses less digits than its factorization.

22745232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477 (or 1465 counting only the distinct ones).

The product of its digits is 6720, while the sum is 27.

The square root of 22745232 is about 4769.1961586833. The cubic root of 22745232 is about 283.3327587839.

Adding to 22745232 its reverse (23254722), we get a palindrome (45999954).

The spelling of 22745232 in words is "twenty-two million, seven hundred forty-five thousand, two hundred thirty-two".