12000987 has 32 divisors (see below), whose sum is σ = 18768960. Its totient is φ = 7568640.

The previous prime is 12000979. The next prime is 12001001. The reversal of 12000987 is 78900021.

It is not a de Polignac number, because 12000987 - 2³ = 12000979 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12000987.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000977) 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, 40813 + ... + 41105.

It is an arithmetic number, because the mean of its divisors is an integer number (586530).

Almost surely, 2^12000987 is an apocalyptic number.

12000987 is a deficient number, since it is larger than the sum of its proper divisors (6767973).

12000987 is a wasteful number, since it uses less digits than its factorization.

12000987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 12000987 is about 3464.2440733874. The cubic root of 12000987 is about 228.9491251883.

The spelling of 12000987 in words is "twelve million, nine hundred eighty-seven", and thus it is an aban number.