22961328 has 80 divisors (see below), whose sum is σ = 65995776. Its totient is φ = 6831360.

The previous prime is 22961327. The next prime is 22961363. The reversal of 22961328 is 82316922.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22961327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18751 + ... + 19937.

Almost surely, 2^22961328 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 22961328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32997888).

22961328 is an abundant number, since it is smaller than the sum of its proper divisors (43034448).

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

22961328 is a wasteful number, since it uses less digits than its factorization.

22961328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242 (or 1236 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 22961328 is about 4791.7979924033. The cubic root of 22961328 is about 284.2272201298.

The spelling of 22961328 in words is "twenty-two million, nine hundred sixty-one thousand, three hundred twenty-eight".