18228679 has 8 divisors (see below), whose sum is σ = 21396128. Its totient is φ = 15202080.

The previous prime is 18228677. The next prime is 18228701. The reversal of 18228679 is 97682281.

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

It is a cyclic number.

It is not a de Polignac number, because 18228679 - 2¹ = 18228677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18228671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34932 + ... + 35449.

It is an arithmetic number, because the mean of its divisors is an integer number (2674516).

Almost surely, 2^18228679 is an apocalyptic number.

18228679 is a deficient number, since it is larger than the sum of its proper divisors (3167449).

18228679 is an equidigital number, since it uses as much as digits as its factorization.

18228679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70425.

The product of its digits is 96768, while the sum is 43.

The square root of 18228679 is about 4269.5057090956. The cubic root of 18228679 is about 263.1793030029.

It can be divided in two parts, 1822 and 8679, that added together give a palindrome (10501).

The spelling of 18228679 in words is "eighteen million, two hundred twenty-eight thousand, six hundred seventy-nine".