16809730 has 16 divisors (see below), whose sum is σ = 34580160. Its totient is φ = 5763312.

The previous prime is 16809679. The next prime is 16809739. The reversal of 16809730 is 3790861.

It is not an unprimeable number, because it can be changed into a prime (16809739) 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, 120000 + ... + 120139.

It is an arithmetic number, because the mean of its divisors is an integer number (2161260).

Almost surely, 2^16809730 is an apocalyptic number.

16809730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16809730 is an abundant number, since it is smaller than the sum of its proper divisors (17770430).

16809730 is a wasteful number, since it uses less digits than its factorization.

16809730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240153.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 16809730 is about 4099.9670730385. The cubic root of 16809730 is about 256.1652680394.

The spelling of 16809730 in words is "sixteen million, eight hundred nine thousand, seven hundred thirty".