22621328 has 20 divisors (see below), whose sum is σ = 45735168. Its totient is φ = 10818720.

The previous prime is 22621327. The next prime is 22621399. The reversal of 22621328 is 82312622.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 22621297 and 22621306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22621327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30368 + ... + 31103.

Almost surely, 2^22621328 is an apocalyptic number.

It is an amenable number.

22621328 is an abundant number, since it is smaller than the sum of its proper divisors (23113840).

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

22621328 is a wasteful number, since it uses less digits than its factorization.

22621328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61502 (or 61496 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 22621328 is about 4756.1883898769. The cubic root of 22621328 is about 282.8173393737.

The spelling of 22621328 in words is "twenty-two million, six hundred twenty-one thousand, three hundred twenty-eight".