22407252 has 48 divisors (see below), whose sum is σ = 60746112. Its totient is φ = 6295680.

The previous prime is 22407247. The next prime is 22407269. The reversal of 22407252 is 25270422.

It is a congruent number.

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, 2938 + ... + 7310.

It is an arithmetic number, because the mean of its divisors is an integer number (1265544).

Almost surely, 2^22407252 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 22407252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30373056).

22407252 is an abundant number, since it is smaller than the sum of its proper divisors (38338860).

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

22407252 is a wasteful number, since it uses less digits than its factorization.

22407252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4448 (or 4446 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 22407252 is about 4733.6298968128. The cubic root of 22407252 is about 281.9223668398.

Adding to 22407252 its reverse (25270422), we get a palindrome (47677674).

The spelling of 22407252 in words is "twenty-two million, four hundred seven thousand, two hundred fifty-two".