16897018 has 8 divisors (see below), whose sum is σ = 25692948. Its totient is φ = 8332704.

The previous prime is 16897009. The next prime is 16897021. The reversal of 16897018 is 81079861.

It can be written as a sum of positive squares in 2 ways, for example, as 15737089 + 1159929 = 3967^2 + 1077^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 57721 + ... + 58012.

Almost surely, 2^16897018 is an apocalyptic number.

16897018 is a deficient number, since it is larger than the sum of its proper divisors (8795930).

16897018 is a wasteful number, since it uses less digits than its factorization.

16897018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115808.

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

The square root of 16897018 is about 4110.5982532960. The cubic root of 16897018 is about 256.6078998157.

The spelling of 16897018 in words is "sixteen million, eight hundred ninety-seven thousand, eighteen".