16728145 has 8 divisors (see below), whose sum is σ = 22941504. Its totient is φ = 11470704.

The previous prime is 16728143. The next prime is 16728149. The reversal of 16728145 is 54182761.

16728145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 16728145 - 2¹ = 16728143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16728145.

It is not an unprimeable number, because it can be changed into a prime (16728143) 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, 238939 + ... + 239008.

It is an arithmetic number, because the mean of its divisors is an integer number (2867688).

Almost surely, 2^16728145 is an apocalyptic number.

It is an amenable number.

16728145 is a deficient number, since it is larger than the sum of its proper divisors (6213359).

16728145 is an equidigital number, since it uses as much as digits as its factorization.

16728145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477959.

The product of its digits is 13440, while the sum is 34.

The square root of 16728145 is about 4090.0055012188. The cubic root of 16728145 is about 255.7501682545.

The spelling of 16728145 in words is "sixteen million, seven hundred twenty-eight thousand, one hundred forty-five".