13928049 has 12 divisors (see below), whose sum is σ = 21301956. Its totient is φ = 8739072.

The previous prime is 13928003. The next prime is 13928059. The reversal of 13928049 is 94082931.

It can be written as a sum of positive squares in 2 ways, for example, as 10890000 + 3038049 = 3300^2 + 1743^2 .

It is not a de Polignac number, because 13928049 - 2¹⁵ = 13895281 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13928059) 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 11 ways as a sum of consecutive naturals, for example, 45364 + ... + 45669.

It is an arithmetic number, because the mean of its divisors is an integer number (1775163).

Almost surely, 2^13928049 is an apocalyptic number.

It is an amenable number.

13928049 is a deficient number, since it is larger than the sum of its proper divisors (7373907).

13928049 is a wasteful number, since it uses less digits than its factorization.

13928049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91056 (or 91053 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 13928049 is about 3732.0301445728. The cubic root of 13928049 is about 240.6006310060.

The spelling of 13928049 in words is "thirteen million, nine hundred twenty-eight thousand, forty-nine".