16728069 has 8 divisors (see below), whose sum is σ = 22573152. Its totient is φ = 11017520.

The previous prime is 16728043. The next prime is 16728071. The reversal of 16728069 is 96082761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16728069 - 2¹³ = 16719877 is a prime.

It is a super-2 number, since 2×16728069² = 559656584937522, 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 (16728029) 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 7 ways as a sum of consecutive naturals, for example, 33342 + ... + 33839.

It is an arithmetic number, because the mean of its divisors is an integer number (2821644).

Almost surely, 2^16728069 is an apocalyptic number.

It is an amenable number.

16728069 is a deficient number, since it is larger than the sum of its proper divisors (5845083).

16728069 is an equidigital number, since it uses as much as digits as its factorization.

16728069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67267.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 16728069 is about 4089.9962102672. The cubic root of 16728069 is about 255.7497809423.

The spelling of 16728069 in words is "sixteen million, seven hundred twenty-eight thousand, sixty-nine".