22238328 has 32 divisors (see below), whose sum is σ = 63538560. Its totient is φ = 6353760.

The previous prime is 22238327. The next prime is 22238347. The reversal of 22238328 is 82383222.

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 = 22238295 and 22238304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22238327) 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, 66018 + ... + 66353.

It is an arithmetic number, because the mean of its divisors is an integer number (1985580).

Almost surely, 2^22238328 is an apocalyptic number.

22238328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22238328 is an abundant number, since it is smaller than the sum of its proper divisors (41300232).

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

22238328 is a wasteful number, since it uses less digits than its factorization.

22238328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132387 (or 132383 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The square root of 22238328 is about 4715.7531742024. The cubic root of 22238328 is about 281.2121260605.

The spelling of 22238328 in words is "twenty-two million, two hundred thirty-eight thousand, three hundred twenty-eight".