13072403 has 4 divisors (see below), whose sum is σ = 13167960. Its totient is φ = 12976848.

The previous prime is 13072391. The next prime is 13072429. The reversal of 13072403 is 30427031.

13072403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13072403 - 2¹⁶ = 13006867 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (13072603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47573 + ... + 47846.

It is an arithmetic number, because the mean of its divisors is an integer number (3291990).

Almost surely, 2^13072403 is an apocalyptic number.

13072403 is a deficient number, since it is larger than the sum of its proper divisors (95557).

13072403 is an equidigital number, since it uses as much as digits as its factorization.

13072403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95556.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 13072403 is about 3615.5778238063. The cubic root of 13072403 is about 235.5691831425.

Adding to 13072403 its reverse (30427031), we get a palindrome (43499434).

The spelling of 13072403 in words is "thirteen million, seventy-two thousand, four hundred three".