3021987 has 16 divisors (see below), whose sum is σ = 4193280. Its totient is φ = 1934400.

The previous prime is 3021983. The next prime is 3021989. The reversal of 3021987 is 7891203.

It is a happy number.

3021987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3021987 - 2² = 3021983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3021983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9562 + ... + 9872.

It is an arithmetic number, because the mean of its divisors is an integer number (262080).

Almost surely, 2^3021987 is an apocalyptic number.

3021987 is a deficient number, since it is larger than the sum of its proper divisors (1171293).

3021987 is a wasteful number, since it uses less digits than its factorization.

3021987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 3021987 is about 1738.3863207009. The cubic root of 3021987 is about 144.5764413180.

The spelling of 3021987 in words is "three million, twenty-one thousand, nine hundred eighty-seven".