14218390 has 16 divisors (see below), whose sum is σ = 26218080. Its totient is φ = 5548480.

The previous prime is 14218343. The next prime is 14218417. The reversal of 14218390 is 9381241.

It is a happy number.

It is a super-2 number, since 2×14218390² = 404325228384200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16930 + ... + 17749.

It is an arithmetic number, because the mean of its divisors is an integer number (1638630).

Almost surely, 2^14218390 is an apocalyptic number.

14218390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

14218390 is a deficient number, since it is larger than the sum of its proper divisors (11999690).

14218390 is a wasteful number, since it uses less digits than its factorization.

14218390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34727.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 14218390 is about 3770.7280464123. The cubic root of 14218390 is about 242.2609824751.

The spelling of 14218390 in words is "fourteen million, two hundred eighteen thousand, three hundred ninety".