13608228 has 48 divisors (see below), whose sum is σ = 34461504. Its totient is φ = 4162560.

The previous prime is 13608223. The next prime is 13608247. The reversal of 13608228 is 82280631.

13608228 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 13608195 and 13608204.

It is not an unprimeable number, because it can be changed into a prime (13608223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7551 + ... + 9177.

It is an arithmetic number, because the mean of its divisors is an integer number (717948).

Almost surely, 2^13608228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13608228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17230752).

13608228 is an abundant number, since it is smaller than the sum of its proper divisors (20853276).

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

13608228 is a wasteful number, since it uses less digits than its factorization.

13608228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692 (or 1690 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 13608228 is about 3688.9331791183. The cubic root of 13608228 is about 238.7447658365.

Adding to 13608228 its reverse (82280631), we get a palindrome (95888859).

The spelling of 13608228 in words is "thirteen million, six hundred eight thousand, two hundred twenty-eight".