16828720 has 20 divisors (see below), whose sum is σ = 39126960. Its totient is φ = 6731456.

The previous prime is 16828711. The next prime is 16828723. The reversal of 16828720 is 2782861.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (16828723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105100 + ... + 105259.

It is an arithmetic number, because the mean of its divisors is an integer number (1956348).

Almost surely, 2^16828720 is an apocalyptic number.

16828720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16828720 is an abundant number, since it is smaller than the sum of its proper divisors (22298240).

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

16828720 is a wasteful number, since it uses less digits than its factorization.

16828720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210372 (or 210366 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 16828720 is about 4102.2822916031. The cubic root of 16828720 is about 256.2616952822.

The spelling of 16828720 in words is "sixteen million, eight hundred twenty-eight thousand, seven hundred twenty".