16988047 has 4 divisors (see below), whose sum is σ = 17276040. Its totient is φ = 16700056.

The previous prime is 16988011. The next prime is 16988077. The reversal of 16988047 is 74088961.

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 16988047 - 2²³ = 8599439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16987994 and 16988012.

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, 143908 + ... + 144025.

It is an arithmetic number, because the mean of its divisors is an integer number (4319010).

Almost surely, 2^16988047 is an apocalyptic number.

16988047 is a deficient number, since it is larger than the sum of its proper divisors (287993).

16988047 is an equidigital number, since it uses as much as digits as its factorization.

16988047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287992.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 16988047 is about 4121.6558565703. The cubic root of 16988047 is about 257.0678811541.

The spelling of 16988047 in words is "sixteen million, nine hundred eighty-eight thousand, forty-seven".