22972128 has 48 divisors (see below), whose sum is σ = 60592896. Its totient is φ = 7620480.

The previous prime is 22972123. The next prime is 22972133. The reversal of 22972128 is 82127922.

It is an interprime number because it is at equal distance from previous prime (22972123) and next prime (22972133).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22972123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25575 + ... + 26457.

It is an arithmetic number, because the mean of its divisors is an integer number (1262352).

Almost surely, 2^22972128 is an apocalyptic number.

It is an amenable number.

22972128 is an abundant number, since it is smaller than the sum of its proper divisors (37620768).

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

22972128 is a wasteful number, since it uses less digits than its factorization.

22972128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167 (or 1159 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 22972128 is about 4792.9247855563. The cubic root of 22972128 is about 284.2717758110.

The spelling of 22972128 in words is "twenty-two million, nine hundred seventy-two thousand, one hundred twenty-eight".