12018860 has 36 divisors (see below), whose sum is σ = 28944048. Its totient is φ = 4106688.

The previous prime is 12018841. The next prime is 12018869. The reversal of 12018860 is 6881021.

It is not an unprimeable number, because it can be changed into a prime (12018869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40874 + ... + 41166.

Almost surely, 2^12018860 is an apocalyptic number.

12018860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12018860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14472024).

12018860 is an abundant number, since it is smaller than the sum of its proper divisors (16925188).

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

12018860 is an equidigital number, since it uses as much as digits as its factorization.

12018860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 12018860 is about 3466.8227528964. The cubic root of 12018860 is about 229.0627263444.

Adding to 12018860 its reverse (6881021), we get a palindrome (18899881).

The spelling of 12018860 in words is "twelve million, eighteen thousand, eight hundred sixty".