13889228 has 24 divisors (see below), whose sum is σ = 25804800. Its totient is φ = 6522768.

The previous prime is 13889219. The next prime is 13889237. The reversal of 13889228 is 82298831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13889219) and next prime (13889237).

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8933 + ... + 10371.

It is an arithmetic number, because the mean of its divisors is an integer number (1075200).

Almost surely, 2^13889228 is an apocalyptic number.

It is an amenable number.

13889228 is a deficient number, since it is larger than the sum of its proper divisors (11915572).

13889228 is a wasteful number, since it uses less digits than its factorization.

13889228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589 (or 1587 counting only the distinct ones).

The product of its digits is 55296, while the sum is 41.

The square root of 13889228 is about 3726.8254587517. The cubic root of 13889228 is about 240.3768847001.

The spelling of 13889228 in words is "thirteen million, eight hundred eighty-nine thousand, two hundred twenty-eight".