22572724 has 6 divisors (see below), whose sum is σ = 39502274. Its totient is φ = 11286360.

The previous prime is 22572713. The next prime is 22572731. The reversal of 22572724 is 42727522.

It can be written as a sum of positive squares in only one way, i.e., 11682724 + 10890000 = 3418^2 + 3300^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2821587 + ... + 2821594.

Almost surely, 2^22572724 is an apocalyptic number.

It is an amenable number.

22572724 is a deficient number, since it is larger than the sum of its proper divisors (16929550).

22572724 is a wasteful number, since it uses less digits than its factorization.

22572724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5643185 (or 5643183 counting only the distinct ones).

The product of its digits is 15680, while the sum is 31.

The square root of 22572724 is about 4751.0760886351. The cubic root of 22572724 is about 282.6146411263.

The spelling of 22572724 in words is "twenty-two million, five hundred seventy-two thousand, seven hundred twenty-four".