17987116 has 18 divisors (see below), whose sum is σ = 36617028. Its totient is φ = 7708680.

The previous prime is 17987113. The next prime is 17987119. The reversal of 17987116 is 61178971.

It is an interprime number because it is at equal distance from previous prime (17987113) and next prime (17987119).

It is not an unprimeable number, because it can be changed into a prime (17987113) 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 5 ways as a sum of consecutive naturals, for example, 45690 + ... + 46081.

Almost surely, 2^17987116 is an apocalyptic number.

It is an amenable number.

17987116 is an abundant number, since it is smaller than the sum of its proper divisors (18629912).

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

17987116 is a wasteful number, since it uses less digits than its factorization.

17987116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91789 (or 91780 counting only the distinct ones).

The product of its digits is 21168, while the sum is 40.

The square root of 17987116 is about 4241.1220213524. The cubic root of 17987116 is about 262.0115955476.

The spelling of 17987116 in words is "seventeen million, nine hundred eighty-seven thousand, one hundred sixteen".