16006720 has 28 divisors (see below), whose sum is σ = 38116764. Its totient is φ = 6402560.

The previous prime is 16006709. The next prime is 16006723. The reversal of 16006720 is 2760061.

It can be written as a sum of positive squares in 2 ways, for example, as 8433216 + 7573504 = 2904^2 + 2752^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16006691 and 16006700.

It is not an unprimeable number, because it can be changed into a prime (16006723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24691 + ... + 25330.

It is an arithmetic number, because the mean of its divisors is an integer number (1361313).

Almost surely, 2^16006720 is an apocalyptic number.

16006720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16006720 is an abundant number, since it is smaller than the sum of its proper divisors (22110044).

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

16006720 is an equidigital number, since it uses as much as digits as its factorization.

16006720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50038 (or 50028 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 16006720 is about 4000.8399118185. The cubic root of 16006720 is about 252.0194828306.

Adding to 16006720 its reverse (2760061), we get a palindrome (18766781).

The spelling of 16006720 in words is "sixteen million, six thousand, seven hundred twenty".