22743228 has 48 divisors (see below), whose sum is σ = 58302720. Its totient is φ = 6868224.

The previous prime is 22743199. The next prime is 22743239. The reversal of 22743228 is 82234722.

It is a junction number, because it is equal to n+sod(n) for n = 22743195 and 22743204.

It is a congruent number.

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, 3076 + ... + 7412.

It is an arithmetic number, because the mean of its divisors is an integer number (1214640).

Almost surely, 2^22743228 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 22743228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29151360).

22743228 is an abundant number, since it is smaller than the sum of its proper divisors (35559492).

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

22743228 is a wasteful number, since it uses less digits than its factorization.

22743228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4386 (or 4384 counting only the distinct ones).

The product of its digits is 10752, while the sum is 30.

The square root of 22743228 is about 4768.9860557565. The cubic root of 22743228 is about 283.3244373985.

The spelling of 22743228 in words is "twenty-two million, seven hundred forty-three thousand, two hundred twenty-eight".