13287057 has 8 divisors (see below), whose sum is σ = 20246976. Its totient is φ = 7592592.

The previous prime is 13287049. The next prime is 13287083. The reversal of 13287057 is 75078231.

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

It is not a de Polignac number, because 13287057 - 2³ = 13287049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13287007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316338 + ... + 316379.

It is an arithmetic number, because the mean of its divisors is an integer number (2530872).

Almost surely, 2^13287057 is an apocalyptic number.

It is an amenable number.

13287057 is a deficient number, since it is larger than the sum of its proper divisors (6959919).

13287057 is an equidigital number, since it uses as much as digits as its factorization.

13287057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632727.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 13287057 is about 3645.1415610371. The cubic root of 13287057 is about 236.8515690072.

It can be divided in two parts, 1328 and 7057, that added together give a triangular number (8385 = T₁₂₉).

The spelling of 13287057 in words is "thirteen million, two hundred eighty-seven thousand, fifty-seven".