16809850 has 24 divisors (see below), whose sum is σ = 32347260. Its totient is φ = 6491520.

The previous prime is 16809841. The next prime is 16809853. The reversal of 16809850 is 5890861.

It can be written as a sum of positive squares in 6 ways, for example, as 10909809 + 5900041 = 3303^2 + 2429^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (16809853) 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 11 ways as a sum of consecutive naturals, for example, 4347 + ... + 7246.

Almost surely, 2^16809850 is an apocalyptic number.

16809850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16809850 is a deficient number, since it is larger than the sum of its proper divisors (15537410).

16809850 is a wasteful number, since it uses less digits than its factorization.

16809850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11634 (or 11629 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 16809850 is about 4099.9817072763. The cubic root of 16809850 is about 256.1658776023.

The spelling of 16809850 in words is "sixteen million, eight hundred nine thousand, eight hundred fifty".