22166328 has 64 divisors (see below), whose sum is σ = 58037760. Its totient is φ = 7047936.

The previous prime is 22166327. The next prime is 22166341. The reversal of 22166328 is 82366122.

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 = 22166295 and 22166304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22166327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48276 + ... + 48732.

It is an arithmetic number, because the mean of its divisors is an integer number (906840).

Almost surely, 2^22166328 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 22166328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29018880).

22166328 is an abundant number, since it is smaller than the sum of its proper divisors (35871432).

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

22166328 is a wasteful number, since it uses less digits than its factorization.

22166328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556 (or 552 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 22166328 is about 4708.1129977943. The cubic root of 22166328 is about 280.9083087999.

The spelling of 22166328 in words is "twenty-two million, one hundred sixty-six thousand, three hundred twenty-eight".