18074216 has 16 divisors (see below), whose sum is σ = 34354500. Its totient is φ = 8913024.

The previous prime is 18074141. The next prime is 18074227. The reversal of 18074216 is 61247081.

It can be written as a sum of positive squares in 2 ways, for example, as 16240900 + 1833316 = 4030^2 + 1354^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14891 + ... + 16058.

Almost surely, 2^18074216 is an apocalyptic number.

It is an amenable number.

18074216 is a deficient number, since it is larger than the sum of its proper divisors (16280284).

18074216 is a wasteful number, since it uses less digits than its factorization.

18074216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31028 (or 31024 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 18074216 is about 4251.3781295011. The cubic root of 18074216 is about 262.4338324535.

The spelling of 18074216 in words is "eighteen million, seventy-four thousand, two hundred sixteen".