16889265 has 24 divisors (see below), whose sum is σ = 30221568. Its totient is φ = 8716320.

The previous prime is 16889261. The next prime is 16889287. The reversal of 16889265 is 56298861.

It is not a de Polignac number, because 16889265 - 2² = 16889261 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16889265.

It is not an unprimeable number, because it can be changed into a prime (16889261) 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 23 ways as a sum of consecutive naturals, for example, 4659 + ... + 7448.

It is an arithmetic number, because the mean of its divisors is an integer number (1259232).

Almost surely, 2^16889265 is an apocalyptic number.

16889265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16889265 is a deficient number, since it is larger than the sum of its proper divisors (13332303).

16889265 is a wasteful number, since it uses less digits than its factorization.

16889265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12149 (or 12146 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 16889265 is about 4109.6550950171. The cubic root of 16889265 is about 256.5686466289.

The spelling of 16889265 in words is "sixteen million, eight hundred eighty-nine thousand, two hundred sixty-five".