22642672 has 40 divisors (see below), whose sum is σ = 49309344. Its totient is φ = 9993984.

The previous prime is 22642667. The next prime is 22642687. The reversal of 22642672 is 27624622.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2418 + ... + 7150.

Almost surely, 2^22642672 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 22642672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24654672).

22642672 is an abundant number, since it is smaller than the sum of its proper divisors (26666672).

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

22642672 is a wasteful number, since it uses less digits than its factorization.

22642672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4777 (or 4771 counting only the distinct ones).

The product of its digits is 16128, while the sum is 31.

The square root of 22642672 is about 4758.4316744070. The cubic root of 22642672 is about 282.9062607042.

The spelling of 22642672 in words is "twenty-two million, six hundred forty-two thousand, six hundred seventy-two".