22680072 has 96 divisors (see below), whose sum is σ = 65988000. Its totient is φ = 7015680.

The previous prime is 22680067. The next prime is 22680089. The reversal of 22680072 is 27008622.

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, 80572 + ... + 80852.

It is an arithmetic number, because the mean of its divisors is an integer number (687375).

Almost surely, 2^22680072 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 22680072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32994000).

22680072 is an abundant number, since it is smaller than the sum of its proper divisors (43307928).

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

22680072 is a wasteful number, since it uses less digits than its factorization.

22680072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 22680072 is about 4762.3599191997. The cubic root of 22680072 is about 283.0619383548.

Adding to 22680072 its reverse (27008622), we get a palindrome (49688694).

The spelling of 22680072 in words is "twenty-two million, six hundred eighty thousand, seventy-two".