22739572 has 12 divisors (see below), whose sum is σ = 39903556. Its totient is φ = 11338560.

The previous prime is 22739569. The next prime is 22739579. The reversal of 22739572 is 27593722.

It can be written as a sum of positive squares in 2 ways, for example, as 15319396 + 7420176 = 3914^2 + 2724^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22739579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6129 + ... + 9112.

Almost surely, 2^22739572 is an apocalyptic number.

It is an amenable number.

22739572 is a deficient number, since it is larger than the sum of its proper divisors (17163984).

22739572 is a wasteful number, since it uses less digits than its factorization.

22739572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15618 (or 15616 counting only the distinct ones).

The product of its digits is 52920, while the sum is 37.

The square root of 22739572 is about 4768.6027303603. The cubic root of 22739572 is about 283.3092550088.

The spelling of 22739572 in words is "twenty-two million, seven hundred thirty-nine thousand, five hundred seventy-two".