16728265 has 8 divisors (see below), whose sum is σ = 21130560. Its totient is φ = 12678192.

The previous prime is 16728263. The next prime is 16728277. The reversal of 16728265 is 56282761.

It is a happy number.

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 16728265 - 2¹ = 16728263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16728263) 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 7 ways as a sum of consecutive naturals, for example, 87949 + ... + 88138.

It is an arithmetic number, because the mean of its divisors is an integer number (2641320).

Almost surely, 2^16728265 is an apocalyptic number.

It is an amenable number.

16728265 is a deficient number, since it is larger than the sum of its proper divisors (4402295).

16728265 is a wasteful number, since it uses less digits than its factorization.

16728265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176111.

The product of its digits is 40320, while the sum is 37.

The square root of 16728265 is about 4090.0201710994. The cubic root of 16728265 is about 255.7507797976.

The spelling of 16728265 in words is "sixteen million, seven hundred twenty-eight thousand, two hundred sixty-five".