13287489 has 8 divisors (see below), whose sum is σ = 18758880. Its totient is φ = 8337216.

The previous prime is 13287467. The next prime is 13287497. The reversal of 13287489 is 98478231.

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

It is not a de Polignac number, because 13287489 - 2⁸ = 13287233 is a prime.

It is a super-3 number, since 3×13287489³ (a number of 22 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13287489.

It is not an unprimeable number, because it can be changed into a prime (13287389) 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, 130219 + ... + 130320.

It is an arithmetic number, because the mean of its divisors is an integer number (2344860).

Almost surely, 2^13287489 is an apocalyptic number.

It is an amenable number.

13287489 is a deficient number, since it is larger than the sum of its proper divisors (5471391).

13287489 is a wasteful number, since it uses less digits than its factorization.

13287489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260559.

The product of its digits is 96768, while the sum is 42.

The square root of 13287489 is about 3645.2008175134. The cubic root of 13287489 is about 236.8541358853.

The spelling of 13287489 in words is "thirteen million, two hundred eighty-seven thousand, four hundred eighty-nine".