16728105 has 8 divisors (see below), whose sum is σ = 26764992. Its totient is φ = 8921648.

The previous prime is 16728083. The next prime is 16728109. The reversal of 16728105 is 50182761.

16728105 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 a cyclic number.

It is not a de Polignac number, because 16728105 - 2⁵ = 16728073 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16728109) 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, 557589 + ... + 557618.

It is an arithmetic number, because the mean of its divisors is an integer number (3345624).

Almost surely, 2^16728105 is an apocalyptic number.

16728105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16728105 is a deficient number, since it is larger than the sum of its proper divisors (10036887).

16728105 is a wasteful number, since it uses less digits than its factorization.

16728105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115215.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 16728105 is about 4090.0006112469. Note that the first 3 decimals coincide. The cubic root of 16728105 is about 255.7499644061.

Subtracting 16728105 from its reverse (50182761), we obtain a square (33454656 = 5784²).

The spelling of 16728105 in words is "sixteen million, seven hundred twenty-eight thousand, one hundred five".