22074228 has 96 divisors (see below), whose sum is σ = 66165120. Its totient is φ = 6289920.

The previous prime is 22074223. The next prime is 22074229. The reversal of 22074228 is 82247022.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22074223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19650 + ... + 20742.

It is an arithmetic number, because the mean of its divisors is an integer number (689220).

Almost surely, 2^22074228 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 22074228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33082560).

22074228 is an abundant number, since it is smaller than the sum of its proper divisors (44090892).

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

22074228 is a wasteful number, since it uses less digits than its factorization.

22074228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134 (or 1126 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 22074228 is about 4698.3218280573. The cubic root of 22074228 is about 280.5187153288.

The spelling of 22074228 in words is "twenty-two million, seventy-four thousand, two hundred twenty-eight".