13928403 has 16 divisors (see below), whose sum is σ = 19109376. Its totient is φ = 9019680.

The previous prime is 13928399. The next prime is 13928407. The reversal of 13928403 is 30482931.

It is an interprime number because it is at equal distance from previous prime (13928399) and next prime (13928407).

It is not a de Polignac number, because 13928403 - 2² = 13928399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13928407) 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 15 ways as a sum of consecutive naturals, for example, 24108 + ... + 24678.

It is an arithmetic number, because the mean of its divisors is an integer number (1194336).

Almost surely, 2^13928403 is an apocalyptic number.

13928403 is a deficient number, since it is larger than the sum of its proper divisors (5180973).

13928403 is a wasteful number, since it uses less digits than its factorization.

13928403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 13928403 is about 3732.0775715411. The cubic root of 13928403 is about 240.6026693844.

The spelling of 13928403 in words is "thirteen million, nine hundred twenty-eight thousand, four hundred three".