13028403 has 8 divisors (see below), whose sum is σ = 17840848. Its totient is φ = 8450784.

The previous prime is 13028399. The next prime is 13028413. The reversal of 13028403 is 30482031.

It is a happy number.

13028403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13028403 - 2² = 13028399 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 13028403.

It is not an unprimeable number, because it can be changed into a prime (13028413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58576 + ... + 58797.

It is an arithmetic number, because the mean of its divisors is an integer number (2230106).

Almost surely, 2^13028403 is an apocalyptic number.

13028403 is a deficient number, since it is larger than the sum of its proper divisors (4812445).

13028403 is a wasteful number, since it uses less digits than its factorization.

13028403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117413.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 13028403 is about 3609.4879138182. The cubic root of 13028403 is about 235.3045876946.

It can be divided in two parts, 13028 and 403, that added together give a palindrome (13431).

The spelling of 13028403 in words is "thirteen million, twenty-eight thousand, four hundred three".