16987882 has 4 divisors (see below), whose sum is σ = 25481826. Its totient is φ = 8493940.

The previous prime is 16987853. The next prime is 16987891. The reversal of 16987882 is 28878961.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15452761 + 1535121 = 3931^2 + 1239^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4246969 + ... + 4246972.

Almost surely, 2^16987882 is an apocalyptic number.

16987882 is a deficient number, since it is larger than the sum of its proper divisors (8493944).

16987882 is an equidigital number, since it uses as much as digits as its factorization.

16987882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8493943.

The product of its digits is 387072, while the sum is 49.

The square root of 16987882 is about 4121.6358402945. The cubic root of 16987882 is about 257.0670488760.

The spelling of 16987882 in words is "sixteen million, nine hundred eighty-seven thousand, eight hundred eighty-two".