13428879 has 8 divisors (see below), whose sum is σ = 17926272. Its totient is φ = 8942040.

The previous prime is 13428871. The next prime is 13428889. The reversal of 13428879 is 97882431.

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

It is not a de Polignac number, because 13428879 - 2³ = 13428871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13428879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13428871) 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 7 ways as a sum of consecutive naturals, for example, 1084 + ... + 5294.

It is an arithmetic number, because the mean of its divisors is an integer number (2240784).

Almost surely, 2^13428879 is an apocalyptic number.

13428879 is a deficient number, since it is larger than the sum of its proper divisors (4497393).

13428879 is a wasteful number, since it uses less digits than its factorization.

13428879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5277.

The product of its digits is 96768, while the sum is 42.

The square root of 13428879 is about 3664.5434913506. The cubic root of 13428879 is about 237.6912822805.

The spelling of 13428879 in words is "thirteen million, four hundred twenty-eight thousand, eight hundred seventy-nine".