16728770 has 16 divisors (see below), whose sum is σ = 30171960. Its totient is φ = 6678144.

The previous prime is 16728769. The next prime is 16728793. The reversal of 16728770 is 7782761.

It can be written as a sum of positive squares in 4 ways, for example, as 12439729 + 4289041 = 3527^2 + 2071^2 .

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 7 ways as a sum of consecutive naturals, for example, 4766 + ... + 7494.

Almost surely, 2^16728770 is an apocalyptic number.

16728770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16728770 is a deficient number, since it is larger than the sum of its proper divisors (13443190).

16728770 is a wasteful number, since it uses less digits than its factorization.

16728770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3349.

The product of its (nonzero) digits is 32928, while the sum is 38.

The square root of 16728770 is about 4090.0819062703. The cubic root of 16728770 is about 255.7533533430.

The spelling of 16728770 in words is "sixteen million, seven hundred twenty-eight thousand, seven hundred seventy".