16728735 has 16 divisors (see below), whose sum is σ = 26910720. Its totient is φ = 8873760.

The previous prime is 16728709. The next prime is 16728739. The reversal of 16728735 is 53782761.

It is not a de Polignac number, because 16728735 - 2⁵ = 16728703 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16728693 and 16728702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16728739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55 + ... + 5784.

It is an arithmetic number, because the mean of its divisors is an integer number (1681920).

Almost surely, 2^16728735 is an apocalyptic number.

16728735 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16728735 is a deficient number, since it is larger than the sum of its proper divisors (10181985).

16728735 is a wasteful number, since it uses less digits than its factorization.

16728735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6038.

The product of its digits is 70560, while the sum is 39.

The square root of 16728735 is about 4090.0776276252. The cubic root of 16728735 is about 255.7531749801.

The spelling of 16728735 in words is "sixteen million, seven hundred twenty-eight thousand, seven hundred thirty-five".