22939928 has 64 divisors (see below), whose sum is σ = 49572000. Its totient is φ = 9856000.

The previous prime is 22939913. The next prime is 22939933. The reversal of 22939928 is 82993922.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227078 + ... + 227178.

Almost surely, 2^22939928 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 22939928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24786000).

22939928 is an abundant number, since it is smaller than the sum of its proper divisors (26632072).

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

22939928 is a wasteful number, since it uses less digits than its factorization.

22939928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 232 counting only the distinct ones).

The product of its digits is 139968, while the sum is 44.

The square root of 22939928 is about 4789.5644895961. The cubic root of 22939928 is about 284.1388925860.

It can be divided in two parts, 2293 and 9928, that added together give a palindrome (12221).

The spelling of 22939928 in words is "twenty-two million, nine hundred thirty-nine thousand, nine hundred twenty-eight".