12238228 has 12 divisors (see below), whose sum is σ = 21586432. Its totient is φ = 6070680.

The previous prime is 12238217. The next prime is 12238229. The reversal of 12238228 is 82283221.

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 = 12238196 and 12238205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12238229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11538 + ... + 12553.

Almost surely, 2^12238228 is an apocalyptic number.

It is an amenable number.

12238228 is a deficient number, since it is larger than the sum of its proper divisors (9348204).

12238228 is a wasteful number, since it uses less digits than its factorization.

12238228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24222 (or 24220 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 12238228 is about 3498.3178814968. The cubic root of 12238228 is about 230.4479486836.

It can be divided in two parts, 1223822 and 8, that added together give a triangular number (1223830 = T₁₅₆₄).

The spelling of 12238228 in words is "twelve million, two hundred thirty-eight thousand, two hundred twenty-eight".