13228279 has 8 divisors (see below), whose sum is σ = 13512960. Its totient is φ = 12946296.

The previous prime is 13228247. The next prime is 13228283. The reversal of 13228279 is 97282231.

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

It is a cyclic number.

It is not a de Polignac number, because 13228279 - 2⁵ = 13228247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13228679) 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, 11442 + ... + 12544.

It is an arithmetic number, because the mean of its divisors is an integer number (1689120).

Almost surely, 2^13228279 is an apocalyptic number.

13228279 is a deficient number, since it is larger than the sum of its proper divisors (284681).

13228279 is a wasteful number, since it uses less digits than its factorization.

13228279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349.

The product of its digits is 12096, while the sum is 34.

The square root of 13228279 is about 3637.0701120545. The cubic root of 13228279 is about 236.5017990378.

The spelling of 13228279 in words is "thirteen million, two hundred twenty-eight thousand, two hundred seventy-nine".