13280228 has 24 divisors (see below), whose sum is σ = 25642680. Its totient is φ = 5978880.

The previous prime is 13280227. The next prime is 13280237. The reversal of 13280228 is 82208231.

13280228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 88804 + 13191424 = 298^2 + 3632^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 13280197 and 13280206.

It is not an unprimeable number, because it can be changed into a prime (13280227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 983 + ... + 5246.

It is an arithmetic number, because the mean of its divisors is an integer number (1068445).

Almost surely, 2^13280228 is an apocalyptic number.

It is an amenable number.

13280228 is a deficient number, since it is larger than the sum of its proper divisors (12362452).

13280228 is a wasteful number, since it uses less digits than its factorization.

13280228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6287 (or 6285 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 13280228 is about 3644.2047143375. The cubic root of 13280228 is about 236.8109847367.

Adding to 13280228 its reverse (82208231), we get a palindrome (95488459).

The spelling of 13280228 in words is "thirteen million, two hundred eighty thousand, two hundred twenty-eight".