13109285 has 32 divisors (see below), whose sum is σ = 18911232. Its totient is φ = 8536320.

The previous prime is 13109273. The next prime is 13109293. The reversal of 13109285 is 58290131.

It is not a de Polignac number, because 13109285 - 2¹² = 13105189 is a prime.

It is a super-2 number, since 2×13109285² = 343706706422450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68540 + ... + 68730.

It is an arithmetic number, because the mean of its divisors is an integer number (590976).

Almost surely, 2^13109285 is an apocalyptic number.

It is an amenable number.

13109285 is a deficient number, since it is larger than the sum of its proper divisors (5801947).

13109285 is a wasteful number, since it uses less digits than its factorization.

13109285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 13109285 is about 3620.6746608885. The cubic root of 13109285 is about 235.7905172125.

The spelling of 13109285 in words is "thirteen million, one hundred nine thousand, two hundred eighty-five".