13115528 has 16 divisors (see below), whose sum is σ = 24633180. Its totient is φ = 6546688.

The previous prime is 13115527. The next prime is 13115533. The reversal of 13115528 is 82551131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10484644 + 2630884 = 3238^2 + 1622^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13115497 and 13115506.

It is not an unprimeable number, because it can be changed into a prime (13115527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5900 + ... + 7812.

Almost surely, 2^13115528 is an apocalyptic number.

It is an amenable number.

13115528 is a deficient number, since it is larger than the sum of its proper divisors (11517652).

13115528 is a wasteful number, since it uses less digits than its factorization.

13115528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776 (or 2772 counting only the distinct ones).

The product of its digits is 1200, while the sum is 26.

The square root of 13115528 is about 3621.5366904120. The cubic root of 13115528 is about 235.8279412364.

Adding to 13115528 its reverse (82551131), we get a palindrome (95666659).

The spelling of 13115528 in words is "thirteen million, one hundred fifteen thousand, five hundred twenty-eight".