18072874 has 8 divisors (see below), whose sum is σ = 27414180. Its totient is φ = 8934816.

The previous prime is 18072869. The next prime is 18072877. The reversal of 18072874 is 47827081.

It can be written as a sum of positive squares in 2 ways, for example, as 15327225 + 2745649 = 3915^2 + 1657^2 .

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

It is not an unprimeable number, because it can be changed into a prime (18072877) by changing a digit.

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, 50589 + ... + 50944.

Almost surely, 2^18072874 is an apocalyptic number.

18072874 is a deficient number, since it is larger than the sum of its proper divisors (9341306).

18072874 is a wasteful number, since it uses less digits than its factorization.

18072874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101624.

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 18072874 is about 4251.2202953975. The cubic root of 18072874 is about 262.4273371064.

The spelling of 18072874 in words is "eighteen million, seventy-two thousand, eight hundred seventy-four".