12732018 has 64 divisors (see below), whose sum is σ = 29417472. Its totient is φ = 3643200.

The previous prime is 12732007. The next prime is 12732019. The reversal of 12732018 is 81023721.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12732019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84243 + ... + 84393.

It is an arithmetic number, because the mean of its divisors is an integer number (459648).

Almost surely, 2^12732018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12732018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14708736).

12732018 is an abundant number, since it is smaller than the sum of its proper divisors (16685454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12732018 is a wasteful number, since it uses less digits than its factorization.

12732018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 12732018 is about 3568.1953421863. The cubic root of 12732018 is about 233.5065575362.

Adding to 12732018 its reverse (81023721), we get a palindrome (93755739).

The spelling of 12732018 in words is "twelve million, seven hundred thirty-two thousand, eighteen".