13288081 has 4 divisors (see below), whose sum is σ = 13410100. Its totient is φ = 13166064.

The previous prime is 13288063. The next prime is 13288103. The reversal of 13288081 is 18088231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18088231 = 7 ⋅2584033.

It can be written as a sum of positive squares in 2 ways, for example, as 7924225 + 5363856 = 2815^2 + 2316^2 .

It is a cyclic number.

It is not a de Polignac number, because 13288081 - 2²¹ = 11190929 is a prime.

It is a super-2 number, since 2×13288081² = 353146193325122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13288021) 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, 60846 + ... + 61063.

It is an arithmetic number, because the mean of its divisors is an integer number (3352525).

Almost surely, 2^13288081 is an apocalyptic number.

It is an amenable number.

13288081 is a deficient number, since it is larger than the sum of its proper divisors (122019).

13288081 is a wasteful number, since it uses less digits than its factorization.

13288081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122018.

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 13288081 is about 3645.2820192682. The cubic root of 13288081 is about 236.8576533687.

It can be divided in two parts, 1328 and 8081, that added together give a square (9409 = 97²).

The spelling of 13288081 in words is "thirteen million, two hundred eighty-eight thousand, eighty-one".