13147828 has 6 divisors (see below), whose sum is σ = 23008706. Its totient is φ = 6573912.

The previous prime is 13147819. The next prime is 13147831. The reversal of 13147828 is 82874131.

It is a happy number.

13147828 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 only one way, i.e., 12802084 + 345744 = 3578^2 + 588^2 .

It is a super-2 number, since 2×13147828² = 345730762235168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13147793 and 13147802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1643475 + ... + 1643482.

Almost surely, 2^13147828 is an apocalyptic number.

It is an amenable number.

13147828 is a deficient number, since it is larger than the sum of its proper divisors (9860878).

13147828 is a wasteful number, since it uses less digits than its factorization.

13147828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3286961 (or 3286959 counting only the distinct ones).

The product of its digits is 10752, while the sum is 34.

The square root of 13147828 is about 3625.9933811302. The cubic root of 13147828 is about 236.0213760203.

The spelling of 13147828 in words is "thirteen million, one hundred forty-seven thousand, eight hundred twenty-eight".