22921152 has 56 divisors (see below), whose sum is σ = 62618112. Its totient is φ = 7392000.

The previous prime is 22921127. The next prime is 22921153. The reversal of 22921152 is 25112922.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22921153) 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, 4027 + ... + 7877.

Almost surely, 2^22921152 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 22921152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31309056).

22921152 is an abundant number, since it is smaller than the sum of its proper divisors (39696960).

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

22921152 is a wasteful number, since it uses less digits than its factorization.

22921152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3897 (or 3887 counting only the distinct ones).

The product of its digits is 720, while the sum is 24.

The square root of 22921152 is about 4787.6039936486. The cubic root of 22921152 is about 284.0613502321.

The spelling of 22921152 in words is "twenty-two million, nine hundred twenty-one thousand, one hundred fifty-two".