13287471 has 16 divisors (see below), whose sum is σ = 18186336. Its totient is φ = 8626176.

The previous prime is 13287467. The next prime is 13287497. The reversal of 13287471 is 17478231.

It is a happy number.

It is not a de Polignac number, because 13287471 - 2² = 13287467 is a prime.

It is a super-3 number, since 3×13287471³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13287451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30471 + ... + 30903.

It is an arithmetic number, because the mean of its divisors is an integer number (1136646).

Almost surely, 2^13287471 is an apocalyptic number.

13287471 is a deficient number, since it is larger than the sum of its proper divisors (4898865).

13287471 is a wasteful number, since it uses less digits than its factorization.

13287471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682.

The product of its digits is 9408, while the sum is 33.

The square root of 13287471 is about 3645.1983485127. The cubic root of 13287471 is about 236.8540289332.

The spelling of 13287471 in words is "thirteen million, two hundred eighty-seven thousand, four hundred seventy-one".