22453228 has 24 divisors (see below), whose sum is σ = 46122272. Its totient is φ = 9362304.

The previous prime is 22453183. The next prime is 22453229. The reversal of 22453228 is 82235422.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 22453196 and 22453205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22453229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9801 + ... + 11872.

Almost surely, 2^22453228 is an apocalyptic number.

22453228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22453228 is an abundant number, since it is smaller than the sum of its proper divisors (23669044).

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

22453228 is a wasteful number, since it uses less digits than its factorization.

22453228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21721 (or 21719 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

The square root of 22453228 is about 4738.4837237243. The cubic root of 22453228 is about 282.1150545726.

The spelling of 22453228 in words is "twenty-two million, four hundred fifty-three thousand, two hundred twenty-eight".