20716160 has 32 divisors (see below), whose sum is σ = 49526100. Its totient is φ = 8286208.

The previous prime is 20716141. The next prime is 20716187. The reversal of 20716160 is 6161702.

It can be written as a sum of positive squares in 2 ways, for example, as 18181696 + 2534464 = 4264^2 + 1592^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15545 + ... + 16824.

Almost surely, 2^20716160 is an apocalyptic number.

20716160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20716160 is an abundant number, since it is smaller than the sum of its proper divisors (28809940).

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

20716160 is an equidigital number, since it uses as much as digits as its factorization.

20716160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32388 (or 32376 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 20716160 is about 4551.5008513676. The cubic root of 20716160 is about 274.6437701507.

Adding to 20716160 its reverse (6161702), we get a palindrome (26877862).

The spelling of 20716160 in words is "twenty million, seven hundred sixteen thousand, one hundred sixty".