12072018 has 32 divisors (see below), whose sum is σ = 27933696.
Its totient is φ = 3406608.
The previous prime is 12072013. The next prime is 12072019. The reversal of 12072018 is 81027021.
Adding to 12072018 its reverse (81027021), we get a palindrome (93099039).
It is a Harshad number since it is a multiple of its sum of digits (21).
It is a junction number, because it is equal to n+sod(n) for n = 12071985 and 12072003.
It is not an unprimeable number, because it can be changed into a prime (12072013) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1755 + ... + 5217.
It is an arithmetic number, because the mean of its divisors is an integer number (872928).
Almost surely, 212072018 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 12072018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13966848).
12072018 is an abundant number, since it is smaller than the sum of its proper divisors (15861678).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12072018 is a wasteful number, since it uses less digits than its factorization.
12072018 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3558.
The product of its (nonzero) digits is 224, while the sum is 21.
The square root of 12072018 is about 3474.4809684326.
The cubic root of 12072018 is about 229.3999354925.
The spelling of 12072018 in words is "twelve million, seventy-two thousand, eighteen".