22428168 has 64 divisors (see below), whose sum is σ = 67858560. Its totient is φ = 6030336.

The previous prime is 22428157. The next prime is 22428173. The reversal of 22428168 is 86182422.

It is a happy number.

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

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, 1071 + ... + 6782.

It is an arithmetic number, because the mean of its divisors is an integer number (1060290).

Almost surely, 2^22428168 is an apocalyptic number.

22428168 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22428168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33929280).

22428168 is an abundant number, since it is smaller than the sum of its proper divisors (45430392).

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

22428168 is a wasteful number, since it uses less digits than its factorization.

22428168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7886 (or 7882 counting only the distinct ones).

The product of its digits is 12288, while the sum is 33.

The square root of 22428168 is about 4735.8386796849. The cubic root of 22428168 is about 282.0100594973.

The spelling of 22428168 in words is "twenty-two million, four hundred twenty-eight thousand, one hundred sixty-eight".