18214426 has 8 divisors (see below), whose sum is σ = 28759680. Its totient is φ = 8627868.

The previous prime is 18214393. The next prime is 18214439. The reversal of 18214426 is 62441281.

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

It is a junction number, because it is equal to n+sod(n) for n = 18214394 and 18214403.

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 3 ways as a sum of consecutive naturals, for example, 239626 + ... + 239701.

It is an arithmetic number, because the mean of its divisors is an integer number (3594960).

Almost surely, 2^18214426 is an apocalyptic number.

18214426 is a deficient number, since it is larger than the sum of its proper divisors (10545254).

18214426 is a wasteful number, since it uses less digits than its factorization.

18214426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479348.

The product of its digits is 3072, while the sum is 28.

The square root of 18214426 is about 4267.8362199128. The cubic root of 18214426 is about 263.1106918382.

The spelling of 18214426 in words is "eighteen million, two hundred fourteen thousand, four hundred twenty-six".