13228718 has 8 divisors (see below), whose sum is σ = 19868112. Its totient is φ = 6606016.

The previous prime is 13228717. The next prime is 13228741. The reversal of 13228718 is 81782231.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13228717) 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, 1955 + ... + 5502.

It is an arithmetic number, because the mean of its divisors is an integer number (2483514).

Almost surely, 2^13228718 is an apocalyptic number.

13228718 is a deficient number, since it is larger than the sum of its proper divisors (6639394).

13228718 is an equidigital number, since it uses as much as digits as its factorization.

13228718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8346.

The product of its digits is 5376, while the sum is 32.

The square root of 13228718 is about 3637.1304623288. The cubic root of 13228718 is about 236.5044152295.

The spelling of 13228718 in words is "thirteen million, two hundred twenty-eight thousand, seven hundred eighteen".