14157218 has 8 divisors (see below), whose sum is σ = 21753900. Its totient is φ = 6905920.

The previous prime is 14157217. The next prime is 14157229. The reversal of 14157218 is 81275141.

It can be written as a sum of positive squares in 2 ways, for example, as 9259849 + 4897369 = 3043^2 + 2213^2 .

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

It is not an unprimeable number, because it can be changed into a prime (14157211) 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, 86243 + ... + 86406.

Almost surely, 2^14157218 is an apocalyptic number.

14157218 is a deficient number, since it is larger than the sum of its proper divisors (7596682).

14157218 is a wasteful number, since it uses less digits than its factorization.

14157218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172692.

The product of its digits is 2240, while the sum is 29.

The square root of 14157218 is about 3762.6078722078. The cubic root of 14157218 is about 241.9130553044.

The spelling of 14157218 in words is "fourteen million, one hundred fifty-seven thousand, two hundred eighteen".