12001887 has 6 divisors (see below), whose sum is σ = 17336072. Its totient is φ = 8001252.

The previous prime is 12001877. The next prime is 12001897. The reversal of 12001887 is 78810021.

It is an interprime number because it is at equal distance from previous prime (12001877) and next prime (12001897).

It is not a de Polignac number, because 12001887 - 2⁶ = 12001823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12001887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001877) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 666763 + ... + 666780.

Almost surely, 2^12001887 is an apocalyptic number.

12001887 is a deficient number, since it is larger than the sum of its proper divisors (5334185).

12001887 is a wasteful number, since it uses less digits than its factorization.

12001887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333549 (or 1333546 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 12001887 is about 3464.3739694207. The cubic root of 12001887 is about 228.9548483027.

The spelling of 12001887 in words is "twelve million, one thousand, eight hundred eighty-seven".