16669730 has 32 divisors (see below), whose sum is σ = 37411200. Its totient is φ = 5195520.

The previous prime is 16669703. The next prime is 16669777. The reversal of 16669730 is 3796661.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 10055 + ... + 11594.

It is an arithmetic number, because the mean of its divisors is an integer number (1169100).

Almost surely, 2^16669730 is an apocalyptic number.

16669730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16669730 is an abundant number, since it is smaller than the sum of its proper divisors (20741470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16669730 is a wasteful number, since it uses less digits than its factorization.

16669730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21674.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 16669730 is about 4082.8580675796. The cubic root of 16669730 is about 255.4521262473.

It can be divided in two parts, 166 and 69730, that added together give a palindrome (69896).

The spelling of 16669730 in words is "sixteen million, six hundred sixty-nine thousand, seven hundred thirty".