13871312 has 60 divisors (see below), whose sum is σ = 33693156. Its totient is φ = 5483520.

The previous prime is 13871293. The next prime is 13871357. The reversal of 13871312 is 21317831.

It can be written as a sum of positive squares in 2 ways, for example, as 2202256 + 11669056 = 1484^2 + 3416^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 9512 + ... + 10872.

Almost surely, 2^13871312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13871312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16846578).

13871312 is an abundant number, since it is smaller than the sum of its proper divisors (19821844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13871312 is a wasteful number, since it uses less digits than its factorization.

13871312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396 (or 1383 counting only the distinct ones).

The product of its digits is 1008, while the sum is 26.

The square root of 13871312 is about 3724.4210288312. The cubic root of 13871312 is about 240.2734845371.

The spelling of 13871312 in words is "thirteen million, eight hundred seventy-one thousand, three hundred twelve".