22238928 has 40 divisors (see below), whose sum is σ = 63835200. Its totient is φ = 7412832.

The previous prime is 22238921. The next prime is 22238971. The reversal of 22238928 is 82983222.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 22238892 and 22238901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22238921) 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, 25308 + ... + 26171.

It is an arithmetic number, because the mean of its divisors is an integer number (1595880).

Almost surely, 2^22238928 is an apocalyptic number.

It is an amenable number.

22238928 is an abundant number, since it is smaller than the sum of its proper divisors (41596272).

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

22238928 is a wasteful number, since it uses less digits than its factorization.

22238928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51496 (or 51484 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 22238928 is about 4715.8167903344. The cubic root of 22238928 is about 281.2146551139.

The spelling of 22238928 in words is "twenty-two million, two hundred thirty-eight thousand, nine hundred twenty-eight".