22704372 has 18 divisors (see below), whose sum is σ = 57391698. Its totient is φ = 7568112.

The previous prime is 22704349. The next prime is 22704377. The reversal of 22704372 is 27340722.

22704372 is a `hidden beast` number, since 227 + 0 + 437 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11655396 + 11048976 = 3414^2 + 3324^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22704377) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 315303 + ... + 315374.

Almost surely, 2^22704372 is an apocalyptic number.

It is an amenable number.

22704372 is an abundant number, since it is smaller than the sum of its proper divisors (34687326).

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

22704372 is a wasteful number, since it uses less digits than its factorization.

22704372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630687 (or 630682 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 22704372 is about 4764.9104923388. The cubic root of 22704372 is about 283.1629955001.

The spelling of 22704372 in words is "twenty-two million, seven hundred four thousand, three hundred seventy-two".