13947128 has 32 divisors (see below), whose sum is σ = 28652400. Its totient is φ = 6325248.

The previous prime is 13947119. The next prime is 13947139. The reversal of 13947128 is 82174931.

13947128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5000 + ... + 7272.

Almost surely, 2^13947128 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 13947128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14326200).

13947128 is an abundant number, since it is smaller than the sum of its proper divisors (14705272).

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

13947128 is a wasteful number, since it uses less digits than its factorization.

13947128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351 (or 2347 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 13947128 is about 3734.5853852871. The cubic root of 13947128 is about 240.7104411933.

The spelling of 13947128 in words is "thirteen million, nine hundred forty-seven thousand, one hundred twenty-eight".