22731152 has 10 divisors (see below), whose sum is σ = 44041638. Its totient is φ = 11365568.

The previous prime is 22731143. The next prime is 22731167. The reversal of 22731152 is 25113722.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 14868736 + 7862416 = 3856^2 + 2804^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710333 + ... + 710364.

Almost surely, 2^22731152 is an apocalyptic number.

It is an amenable number.

22731152 is a deficient number, since it is larger than the sum of its proper divisors (21310486).

22731152 is a wasteful number, since it uses less digits than its factorization.

22731152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420705 (or 1420699 counting only the distinct ones).

The product of its digits is 840, while the sum is 23.

The square root of 22731152 is about 4767.7197904239. The cubic root of 22731152 is about 283.2742828112.

Adding to 22731152 its reverse (25113722), we get a palindrome (47844874).

The spelling of 22731152 in words is "twenty-two million, seven hundred thirty-one thousand, one hundred fifty-two".