13288285 has 4 divisors (see below), whose sum is σ = 15945948. Its totient is φ = 10630624.

The previous prime is 13288259. The next prime is 13288307. The reversal of 13288285 is 58288231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5659641 + 7628644 = 2379^2 + 2762^2 .

It is a cyclic number.

It is not a de Polignac number, because 13288285 - 2¹³ = 13280093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1328824 + ... + 1328833.

It is an arithmetic number, because the mean of its divisors is an integer number (3986487).

Almost surely, 2^13288285 is an apocalyptic number.

It is an amenable number.

13288285 is a deficient number, since it is larger than the sum of its proper divisors (2657663).

13288285 is an equidigital number, since it uses as much as digits as its factorization.

13288285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2657662.

The product of its digits is 30720, while the sum is 37.

The square root of 13288285 is about 3645.3100005349. The cubic root of 13288285 is about 236.8588654503.

The spelling of 13288285 in words is "thirteen million, two hundred eighty-eight thousand, two hundred eighty-five".