22124772 has 24 divisors (see below), whose sum is σ = 57360800. Its totient is φ = 7374888.

The previous prime is 22124771. The next prime is 22124783. The reversal of 22124772 is 27742122.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (22124771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102322 + ... + 102537.

Almost surely, 2^22124772 is an apocalyptic number.

It is an amenable number.

22124772 is an abundant number, since it is smaller than the sum of its proper divisors (35236028).

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

22124772 is a wasteful number, since it uses less digits than its factorization.

22124772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204872 (or 204864 counting only the distinct ones).

The product of its digits is 3136, while the sum is 27.

The square root of 22124772 is about 4703.6976943677. The cubic root of 22124772 is about 280.7326560688.

Adding to 22124772 its reverse (27742122), we get a palindrome (49866894).

The spelling of 22124772 in words is "twenty-two million, one hundred twenty-four thousand, seven hundred seventy-two".