13288228 has 12 divisors (see below), whose sum is σ = 23310000. Its totient is φ = 6628232.

The previous prime is 13288211. The next prime is 13288259. The reversal of 13288228 is 82288231.

It is a junction number, because it is equal to n+sod(n) for n = 13288193 and 13288202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1978 + ... + 5521.

It is an arithmetic number, because the mean of its divisors is an integer number (1942500).

Almost surely, 2^13288228 is an apocalyptic number.

It is an amenable number.

13288228 is a deficient number, since it is larger than the sum of its proper divisors (10021772).

13288228 is a wasteful number, since it uses less digits than its factorization.

13288228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7946 (or 7944 counting only the distinct ones).

The product of its digits is 12288, while the sum is 34.

The square root of 13288228 is about 3645.3021822614. The cubic root of 13288228 is about 236.8585267817.

The spelling of 13288228 in words is "thirteen million, two hundred eighty-eight thousand, two hundred twenty-eight".