13928671 has 4 divisors (see below), whose sum is σ = 14409000. Its totient is φ = 13448344.

The previous prime is 13928659. The next prime is 13928683. The reversal of 13928671 is 17682931.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (13928659) and next prime (13928683).

It is not a de Polignac number, because 13928671 - 2¹³ = 13920479 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13928671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13928611) 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 3 ways as a sum of consecutive naturals, for example, 240121 + ... + 240178.

It is an arithmetic number, because the mean of its divisors is an integer number (3602250).

Almost surely, 2^13928671 is an apocalyptic number.

13928671 is a deficient number, since it is larger than the sum of its proper divisors (480329).

13928671 is an equidigital number, since it uses as much as digits as its factorization.

13928671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480328.

The product of its digits is 18144, while the sum is 37.

The square root of 13928671 is about 3732.1134763027. The cubic root of 13928671 is about 240.6042125405.

The spelling of 13928671 in words is "thirteen million, nine hundred twenty-eight thousand, six hundred seventy-one".