16990726 has 8 divisors (see below), whose sum is σ = 25845264. Its totient is φ = 8375640.

The previous prime is 16990703. The next prime is 16990751. The reversal of 16990726 is 62709961.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59685 + ... + 59968.

It is an arithmetic number, because the mean of its divisors is an integer number (3230658).

Almost surely, 2^16990726 is an apocalyptic number.

16990726 is a deficient number, since it is larger than the sum of its proper divisors (8854538).

16990726 is a wasteful number, since it uses less digits than its factorization.

16990726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119726.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 16990726 is about 4121.9808345018. The cubic root of 16990726 is about 257.0813935697.

The spelling of 16990726 in words is "sixteen million, nine hundred ninety thousand, seven hundred twenty-six".