12011976 has 96 divisors (see below), whose sum is σ = 34856640. Its totient is φ = 3872448.

The previous prime is 12011969. The next prime is 12011977. The reversal of 12011976 is 67911021.

12011976 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12011977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71845 + ... + 72011.

It is an arithmetic number, because the mean of its divisors is an integer number (363090).

Almost surely, 2^12011976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12011976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17428320).

12011976 is an abundant number, since it is smaller than the sum of its proper divisors (22844664).

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

12011976 is a wasteful number, since it uses less digits than its factorization.

12011976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 12011976 is about 3465.8297707764. The cubic root of 12011976 is about 229.0189848425.

Adding to 12011976 its reverse (67911021), we get a palindrome (79922997).

The spelling of 12011976 in words is "twelve million, eleven thousand, nine hundred seventy-six".