13120228 has 12 divisors (see below), whose sum is σ = 25047792. Its totient is φ = 5963720.

The previous prime is 13120213. The next prime is 13120231. The reversal of 13120228 is 82202131.

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, 149050 + ... + 149137.

It is an arithmetic number, because the mean of its divisors is an integer number (2087316).

Almost surely, 2^13120228 is an apocalyptic number.

It is an amenable number.

13120228 is a deficient number, since it is larger than the sum of its proper divisors (11927564).

13120228 is a wasteful number, since it uses less digits than its factorization.

13120228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298202 (or 298200 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 13120228 is about 3622.1855281032. The cubic root of 13120228 is about 235.8561078226.

Adding to 13120228 its reverse (82202131), we get a palindrome (95322359).

The spelling of 13120228 in words is "thirteen million, one hundred twenty thousand, two hundred twenty-eight".