13478228 has 12 divisors (see below), whose sum is σ = 23612820. Its totient is φ = 6731712.

The previous prime is 13478203. The next prime is 13478251. The reversal of 13478228 is 82287431.

13478228 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 2 ways, for example, as 10316944 + 3161284 = 3212^2 + 1778^2 .

It is a congruent number.

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, 5408 + ... + 7496.

It is an arithmetic number, because the mean of its divisors is an integer number (1967735).

Almost surely, 2^13478228 is an apocalyptic number.

It is an amenable number.

13478228 is a deficient number, since it is larger than the sum of its proper divisors (10134592).

13478228 is a wasteful number, since it uses less digits than its factorization.

13478228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3706 (or 3704 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 13478228 is about 3671.2706247293. The cubic root of 13478228 is about 237.9820856040.

The spelling of 13478228 in words is "thirteen million, four hundred seventy-eight thousand, two hundred twenty-eight".