16988071 has 4 divisors (see below), whose sum is σ = 17882200. Its totient is φ = 16093944.

The previous prime is 16988011. The next prime is 16988077. The reversal of 16988071 is 17088961.

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

It is a cyclic number.

It is not a de Polignac number, because 16988071 - 2⁹ = 16987559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16988077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447036 + ... + 447073.

It is an arithmetic number, because the mean of its divisors is an integer number (4470550).

Almost surely, 2^16988071 is an apocalyptic number.

16988071 is a deficient number, since it is larger than the sum of its proper divisors (894129).

16988071 is an equidigital number, since it uses as much as digits as its factorization.

16988071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894128.

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

The square root of 16988071 is about 4121.6587680205. The cubic root of 16988071 is about 257.0680022122.

The spelling of 16988071 in words is "sixteen million, nine hundred eighty-eight thousand, seventy-one".