18182072 has 32 divisors (see below), whose sum is σ = 35640000. Its totient is φ = 8684928.

The previous prime is 18182071. The next prime is 18182083. The reversal of 18182072 is 27028181.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18182071) 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, 24929 + ... + 25647.

It is an arithmetic number, because the mean of its divisors is an integer number (1113750).

Almost surely, 2^18182072 is an apocalyptic number.

It is an amenable number.

18182072 is a deficient number, since it is larger than the sum of its proper divisors (17457928).

18182072 is a wasteful number, since it uses less digits than its factorization.

18182072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863 (or 859 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 18182072 is about 4264.0440898283. The cubic root of 18182072 is about 262.9548130379.

The spelling of 18182072 in words is "eighteen million, one hundred eighty-two thousand, seventy-two".