22789872 has 120 divisors (see below), whose sum is σ = 76137984. Its totient is φ = 6221952.

The previous prime is 22789861. The next prime is 22789913. The reversal of 22789872 is 27898722.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22693 + ... + 23675.

Almost surely, 2^22789872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22789872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38068992).

22789872 is an abundant number, since it is smaller than the sum of its proper divisors (53348112).

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

22789872 is a wasteful number, since it uses less digits than its factorization.

22789872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027 (or 1018 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 22789872 is about 4773.8738986278. The cubic root of 22789872 is about 283.5179948079.

The spelling of 22789872 in words is "twenty-two million, seven hundred eighty-nine thousand, eight hundred seventy-two".