13261089 has 8 divisors (see below), whose sum is σ = 17880480. Its totient is φ = 8741216.

The previous prime is 13261063. The next prime is 13261099. The reversal of 13261089 is 98016231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13261089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13261009) 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, 24567 + ... + 25100.

It is an arithmetic number, because the mean of its divisors is an integer number (2235060).

Almost surely, 2^13261089 is an apocalyptic number.

It is an amenable number.

13261089 is a deficient number, since it is larger than the sum of its proper divisors (4619391).

13261089 is an equidigital number, since it uses as much as digits as its factorization.

13261089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49759.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 13261089 is about 3641.5778173753. The cubic root of 13261089 is about 236.6971688077.

It can be divided in two parts, 1326 and 1089, that added together give a triangular number (2415 = T₆₉).

The spelling of 13261089 in words is "thirteen million, two hundred sixty-one thousand, eighty-nine".