13347228 has 12 divisors (see below), whose sum is σ = 31143560. Its totient is φ = 4449072.

The previous prime is 13347223. The next prime is 13347233. The reversal of 13347228 is 82274331.

It is an interprime number because it is at equal distance from previous prime (13347223) and next prime (13347233).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×13347228³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13347195 and 13347204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13347223) 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, 556123 + ... + 556146.

Almost surely, 2^13347228 is an apocalyptic number.

It is an amenable number.

13347228 is an abundant number, since it is smaller than the sum of its proper divisors (17796332).

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

13347228 is a wasteful number, since it uses less digits than its factorization.

13347228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112276 (or 1112274 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 13347228 is about 3653.3858268735. The cubic root of 13347228 is about 237.2085614481.

The spelling of 13347228 in words is "thirteen million, three hundred forty-seven thousand, two hundred twenty-eight".