987885100 has 18 divisors (see below), whose sum is σ = 2143710884. Its totient is φ = 395154000.

The previous prime is 987885083. The next prime is 987885109. The reversal of 987885100 is 1588789.

It is not an unprimeable number, because it can be changed into a prime (987885109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4939326 + ... + 4939525.

Almost surely, 2^987885100 is an apocalyptic number.

It is an amenable number.

987885100 is an abundant number, since it is smaller than the sum of its proper divisors (1155825784).

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

987885100 is a wasteful number, since it uses less digits than its factorization.

987885100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9878865 (or 9878858 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 46.

The square root of 987885100 is about 31430.6395098795. The cubic root of 987885100 is about 995.9452814786.

The spelling of 987885100 in words is "nine hundred eighty-seven million, eight hundred eighty-five thousand, one hundred".