16807869 has 24 divisors (see below), whose sum is σ = 26432952. Its totient is φ = 10229760.

The previous prime is 16807867. The next prime is 16807873. The reversal of 16807869 is 96870861.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 308025 + 16499844 = 555^2 + 4062^2 .

It is not a de Polignac number, because 16807869 - 2¹ = 16807867 is a prime.

It is a super-2 number, since 2×16807869² = 565008920642322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16807867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10609 + ... + 12089.

It is an arithmetic number, because the mean of its divisors is an integer number (1101373).

Almost surely, 2^16807869 is an apocalyptic number.

It is an amenable number.

16807869 is a deficient number, since it is larger than the sum of its proper divisors (9625083).

16807869 is a wasteful number, since it uses less digits than its factorization.

16807869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597 (or 1594 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 16807869 is about 4099.7401137145. The cubic root of 16807869 is about 256.1558143647.

The spelling of 16807869 in words is "sixteen million, eight hundred seven thousand, eight hundred sixty-nine".