22166928 has 60 divisors (see below), whose sum is σ = 70902208. Its totient is φ = 6333120.

The previous prime is 22166923. The next prime is 22166941. The reversal of 22166928 is 82966122.

It is a happy number.

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 = 22166892 and 22166901.

It is not an unprimeable number, because it can be changed into a prime (22166923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9988 + ... + 12003.

Almost surely, 2^22166928 is an apocalyptic number.

22166928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22166928 is an abundant number, since it is smaller than the sum of its proper divisors (48735280).

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

22166928 is a wasteful number, since it uses less digits than its factorization.

22166928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22012 (or 22003 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 22166928 is about 4708.1767171592. The cubic root of 22166928 is about 280.9108433268.

The spelling of 22166928 in words is "twenty-two million, one hundred sixty-six thousand, nine hundred twenty-eight".