13228015 has 4 divisors (see below), whose sum is σ = 15873624. Its totient is φ = 10582408.

The previous prime is 13228003. The next prime is 13228021. The reversal of 13228015 is 51082231.

13228015 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 not a de Polignac number, because 13228015 - 2⁵ = 13227983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1322797 + ... + 1322806.

It is an arithmetic number, because the mean of its divisors is an integer number (3968406).

Almost surely, 2^13228015 is an apocalyptic number.

13228015 is a deficient number, since it is larger than the sum of its proper divisors (2645609).

13228015 is an equidigital number, since it uses as much as digits as its factorization.

13228015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2645608.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 13228015 is about 3637.0338189244. The cubic root of 13228015 is about 236.5002257193.

The spelling of 13228015 in words is "thirteen million, two hundred twenty-eight thousand, fifteen".