16890913 has 8 divisors (see below), whose sum is σ = 18361728. Its totient is φ = 15444624.

The previous prime is 16890859. The next prime is 16890917. The reversal of 16890913 is 31909861.

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

It is a de Polignac number, because none of the positive numbers 2^k-16890913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16890917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4681 + ... + 7462.

It is an arithmetic number, because the mean of its divisors is an integer number (2295216).

Almost surely, 2^16890913 is an apocalyptic number.

16890913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16890913 is a deficient number, since it is larger than the sum of its proper divisors (1470815).

16890913 is a wasteful number, since it uses less digits than its factorization.

16890913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12263.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 16890913 is about 4109.8555935702. The cubic root of 16890913 is about 256.5769914045.

The spelling of 16890913 in words is "sixteen million, eight hundred ninety thousand, nine hundred thirteen".