12023660 has 96 divisors (see below), whose sum is σ = 29804544. Its totient is φ = 4032000.

The previous prime is 12023659. The next prime is 12023663. The reversal of 12023660 is 6632021.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12023663) 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, 279599 + ... + 279641.

It is an arithmetic number, because the mean of its divisors is an integer number (310464).

Almost surely, 2^12023660 is an apocalyptic number.

12023660 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 12023660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14902272).

12023660 is an abundant number, since it is smaller than the sum of its proper divisors (17780884).

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

12023660 is a wasteful number, since it uses less digits than its factorization.

12023660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 12023660 is about 3467.5149603138. The cubic root of 12023660 is about 229.0932160567.

Adding to 12023660 its reverse (6632021), we get a palindrome (18655681).

The spelling of 12023660 in words is "twelve million, twenty-three thousand, six hundred sixty".