16108987 has 4 divisors (see below), whose sum is σ = 16205616. Its totient is φ = 16012360.

The previous prime is 16108973. The next prime is 16108991. The reversal of 16108987 is 78980161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78980161 = 13 ⋅6075397.

It is a cyclic number.

It is not a de Polignac number, because 16108987 - 2¹⁵ = 16076219 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16108387) 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 3 ways as a sum of consecutive naturals, for example, 48064 + ... + 48397.

It is an arithmetic number, because the mean of its divisors is an integer number (4051404).

Almost surely, 2^16108987 is an apocalyptic number.

16108987 is a deficient number, since it is larger than the sum of its proper divisors (96629).

16108987 is an equidigital number, since it uses as much as digits as its factorization.

16108987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96628.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 16108987 is about 4013.6002541359. The cubic root of 16108987 is about 252.5550616776. Note that the first 3 decimals are identical.

The spelling of 16108987 in words is "sixteen million, one hundred eight thousand, nine hundred eighty-seven".