16889257 has 16 divisors (see below), whose sum is σ = 21147264. Its totient is φ = 13104000.

The previous prime is 16889251. The next prime is 16889261. The reversal of 16889257 is 75298861.

It is not a de Polignac number, because 16889257 - 2¹¹ = 16887209 is a prime.

It is a Duffinian number.

Its product of digits (241920) is a multiple of the sum of its prime divisors (960).

It is not an unprimeable number, because it can be changed into a prime (16889251) 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 15 ways as a sum of consecutive naturals, for example, 32157 + ... + 32677.

It is an arithmetic number, because the mean of its divisors is an integer number (1321704).

Almost surely, 2^16889257 is an apocalyptic number.

It is an amenable number.

16889257 is a deficient number, since it is larger than the sum of its proper divisors (4258007).

16889257 is a wasteful number, since it uses less digits than its factorization.

16889257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960.

The product of its digits is 241920, while the sum is 46.

The square root of 16889257 is about 4109.6541216993. The cubic root of 16889257 is about 256.5686061190.

The spelling of 16889257 in words is "sixteen million, eight hundred eighty-nine thousand, two hundred fifty-seven".