1987116 has 24 divisors (see below), whose sum is σ = 4745664. Its totient is φ = 646800.

The previous prime is 1987099. The next prime is 1987121. The reversal of 1987116 is 6117891.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1410 + ... + 2441.

It is an arithmetic number, because the mean of its divisors is an integer number (197736).

2^1987116 is an apocalyptic number.

It is an amenable number.

1987116 is an abundant number, since it is smaller than the sum of its proper divisors (2758548).

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

1987116 is a wasteful number, since it uses less digits than its factorization.

1987116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3901 (or 3899 counting only the distinct ones).

The product of its digits is 3024, while the sum is 33.

The square root of 1987116 is about 1409.6510206431. The cubic root of 1987116 is about 125.7209748999.

The spelling of 1987116 in words is "one million, nine hundred eighty-seven thousand, one hundred sixteen".