16897923 has 32 divisors (see below), whose sum is σ = 29606400. Its totient is φ = 9319968.

The previous prime is 16897913. The next prime is 16897963. The reversal of 16897923 is 32979861.

It is not a de Polignac number, because 16897923 - 2⁵ = 16897891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16897913) 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 31 ways as a sum of consecutive naturals, for example, 3940 + ... + 7022.

It is an arithmetic number, because the mean of its divisors is an integer number (925200).

Almost surely, 2^16897923 is an apocalyptic number.

16897923 is a deficient number, since it is larger than the sum of its proper divisors (12708477).

16897923 is a wasteful number, since it uses less digits than its factorization.

16897923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3128 (or 3122 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 16897923 is about 4110.7083331222. The cubic root of 16897923 is about 256.6124810186.

The spelling of 16897923 in words is "sixteen million, eight hundred ninety-seven thousand, nine hundred twenty-three".