16728516 has 36 divisors (see below), whose sum is σ = 48327552. Its totient is φ = 4779504.

The previous prime is 16728479. The next prime is 16728583. The reversal of 16728516 is 61582761.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 32940 + ... + 33443.

It is an arithmetic number, because the mean of its divisors is an integer number (1342432).

Almost surely, 2^16728516 is an apocalyptic number.

It is an amenable number.

16728516 is an abundant number, since it is smaller than the sum of its proper divisors (31599036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16728516 is a wasteful number, since it uses less digits than its factorization.

16728516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66400 (or 66395 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 16728516 is about 4090.0508554296. The cubic root of 16728516 is about 255.7520589326.

The spelling of 16728516 in words is "sixteen million, seven hundred twenty-eight thousand, five hundred sixteen".