13971288 has 16 divisors (see below), whose sum is σ = 34928280. Its totient is φ = 4657088.

The previous prime is 13971271. The next prime is 13971299. The reversal of 13971288 is 88217931.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 291045 + ... + 291092.

Almost surely, 2^13971288 is an apocalyptic number.

It is an amenable number.

13971288 is an abundant number, since it is smaller than the sum of its proper divisors (20956992).

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

13971288 is a wasteful number, since it uses less digits than its factorization.

13971288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582146 (or 582142 counting only the distinct ones).

The product of its digits is 24192, while the sum is 39.

The square root of 13971288 is about 3737.8186151819. The cubic root of 13971288 is about 240.8493517387.

The spelling of 13971288 in words is "thirteen million, nine hundred seventy-one thousand, two hundred eighty-eight".