18214742 has 32 divisors (see below), whose sum is σ = 34461504. Its totient is φ = 7027200.

The previous prime is 18214733. The next prime is 18214747. The reversal of 18214742 is 24741281.

It is a super-2 number, since 2×18214742² = 663553652253128, which contains 22 as substring.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18214747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6242 + ... + 8682.

It is an arithmetic number, because the mean of its divisors is an integer number (1076922).

Almost surely, 2^18214742 is an apocalyptic number.

18214742 is a deficient number, since it is larger than the sum of its proper divisors (16246762).

18214742 is a wasteful number, since it uses less digits than its factorization.

18214742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504.

The product of its digits is 3584, while the sum is 29.

The square root of 18214742 is about 4267.8732408543. The cubic root of 18214742 is about 263.1122133886.

It can be divided in two parts, 182 and 14742, that multiplied together give a square (2683044 = 1638²).

The spelling of 18214742 in words is "eighteen million, two hundred fourteen thousand, seven hundred forty-two".