22471228 has 12 divisors (see below), whose sum is σ = 42349720. Its totient is φ = 10371312.

The previous prime is 22471223. The next prime is 22471231. The reversal of 22471228 is 82217422.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 22471196 and 22471205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22471223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216018 + ... + 216121.

Almost surely, 2^22471228 is an apocalyptic number.

It is an amenable number.

22471228 is a deficient number, since it is larger than the sum of its proper divisors (19878492).

22471228 is a wasteful number, since it uses less digits than its factorization.

22471228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432156 (or 432154 counting only the distinct ones).

The product of its digits is 3584, while the sum is 28.

The square root of 22471228 is about 4740.3826849739. The cubic root of 22471228 is about 282.1904218296.

The spelling of 22471228 in words is "twenty-two million, four hundred seventy-one thousand, two hundred twenty-eight".