16997194 has 8 divisors (see below), whose sum is σ = 25517700. Its totient is φ = 8491296.

The previous prime is 16997143. The next prime is 16997203. The reversal of 16997194 is 49179961.

It can be written as a sum of positive squares in 2 ways, for example, as 16104169 + 893025 = 4013^2 + 945^2 .

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19 + ... + 5830.

Almost surely, 2^16997194 is an apocalyptic number.

16997194 is a deficient number, since it is larger than the sum of its proper divisors (8520506).

16997194 is a wasteful number, since it uses less digits than its factorization.

16997194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7304.

The product of its digits is 122472, while the sum is 46.

The square root of 16997194 is about 4122.7653340931. The cubic root of 16997194 is about 257.1140111969.

The spelling of 16997194 in words is "sixteen million, nine hundred ninety-seven thousand, one hundred ninety-four".