12011982 has 8 divisors (see below), whose sum is σ = 24023976. Its totient is φ = 4003992.

The previous prime is 12011977. The next prime is 12011983. The reversal of 12011982 is 28911021.

It is a sphenic number, since it is the product of 3 distinct primes.

12011982 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000993 + ... + 1001004.

It is an arithmetic number, because the mean of its divisors is an integer number (3002997).

Almost surely, 2^12011982 is an apocalyptic number.

12011982 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12011982 is a wasteful number, since it uses less digits than its factorization.

12011982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002002.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 12011982 is about 3465.8306363699. The cubic root of 12011982 is about 229.0190229743.

The spelling of 12011982 in words is "twelve million, eleven thousand, nine hundred eighty-two".