13287847 has 8 divisors (see below), whose sum is σ = 13723776. Its totient is φ = 12856032.

The previous prime is 13287823. The next prime is 13287853. The reversal of 13287847 is 74878231.

13287847 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13287847 - 2¹⁹ = 12763559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13287877) 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, 6378 + ... + 8200.

It is an arithmetic number, because the mean of its divisors is an integer number (1715472).

Almost surely, 2^13287847 is an apocalyptic number.

13287847 is the 1823-rd decagonal number.

13287847 is a deficient number, since it is larger than the sum of its proper divisors (435929).

13287847 is a wasteful number, since it uses less digits than its factorization.

13287847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057.

The product of its digits is 75264, while the sum is 40.

The square root of 13287847 is about 3645.2499228448. The cubic root of 13287847 is about 236.8562630246.

The spelling of 13287847 in words is "thirteen million, two hundred eighty-seven thousand, eight hundred forty-seven".