13797218 has 4 divisors (see below), whose sum is σ = 20695830. Its totient is φ = 6898608.

The previous prime is 13797193. The next prime is 13797221. The reversal of 13797218 is 81279731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13010449 + 786769 = 3607^2 + 887^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3449303 + ... + 3449306.

Almost surely, 2^13797218 is an apocalyptic number.

13797218 is a deficient number, since it is larger than the sum of its proper divisors (6898612).

13797218 is an equidigital number, since it uses as much as digits as its factorization.

13797218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6898611.

The product of its digits is 21168, while the sum is 38.

The square root of 13797218 is about 3714.4606607151. The cubic root of 13797218 is about 239.8449113770.

The spelling of 13797218 in words is "thirteen million, seven hundred ninety-seven thousand, two hundred eighteen".