13009285 has 4 divisors (see below), whose sum is σ = 15611148. Its totient is φ = 10407424.

The previous prime is 13009279. The next prime is 13009291. The reversal of 13009285 is 58290031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58290031 = 3299 ⋅17669.

It is an interprime number because it is at equal distance from previous prime (13009279) and next prime (13009291).

It can be written as a sum of positive squares in 2 ways, for example, as 6155361 + 6853924 = 2481^2 + 2618^2 .

It is a cyclic number.

It is not a de Polignac number, because 13009285 - 2³ = 13009277 is a prime.

It is a super-2 number, since 2×13009285² = 338482992422450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1300924 + ... + 1300933.

It is an arithmetic number, because the mean of its divisors is an integer number (3902787).

Almost surely, 2^13009285 is an apocalyptic number.

It is an amenable number.

13009285 is a deficient number, since it is larger than the sum of its proper divisors (2601863).

13009285 is an equidigital number, since it uses as much as digits as its factorization.

13009285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2601862.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 13009285 is about 3606.8386434660. The cubic root of 13009285 is about 235.1894353026.

It can be divided in two parts, 1300 and 9285, that added together give a triangular number (10585 = T₁₄₅).

The spelling of 13009285 in words is "thirteen million, nine thousand, two hundred eighty-five".