13275538 has 16 divisors (see below), whose sum is σ = 21152664. Its totient is φ = 6227200.

The previous prime is 13275527. The next prime is 13275539. The reversal of 13275538 is 83557231.

It can be written as a sum of positive squares in 4 ways, for example, as 12229009 + 1046529 = 3497^2 + 1023^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (13275539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18588 + ... + 19288.

Almost surely, 2^13275538 is an apocalyptic number.

13275538 is a deficient number, since it is larger than the sum of its proper divisors (7877126).

13275538 is a wasteful number, since it uses less digits than its factorization.

13275538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277.

The product of its digits is 25200, while the sum is 34.

The square root of 13275538 is about 3643.5611700643. The cubic root of 13275538 is about 236.7831043346.

The spelling of 13275538 in words is "thirteen million, two hundred seventy-five thousand, five hundred thirty-eight".