13428307 has 4 divisors (see below), whose sum is σ = 14135080. Its totient is φ = 12721536.

The previous prime is 13428271. The next prime is 13428319. The reversal of 13428307 is 70382431.

13428307 is digitally balanced in base 3, 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 a de Polignac number, because none of the positive numbers 2^k-13428307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13428347) 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, 353358 + ... + 353395.

It is an arithmetic number, because the mean of its divisors is an integer number (3533770).

Almost surely, 2^13428307 is an apocalyptic number.

13428307 is a deficient number, since it is larger than the sum of its proper divisors (706773).

13428307 is an equidigital number, since it uses as much as digits as its factorization.

13428307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706772.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 13428307 is about 3664.4654453276. The cubic root of 13428307 is about 237.6879074308.

It can be divided in two parts, 134 and 28307, that added together give a triangular number (28441 = T₂₃₈).

The spelling of 13428307 in words is "thirteen million, four hundred twenty-eight thousand, three hundred seven".