20790160 has 40 divisors (see below), whose sum is σ = 50443200. Its totient is φ = 7953792.

The previous prime is 20790139. The next prime is 20790163. The reversal of 20790160 is 6109702.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (20790163) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3810 + ... + 7489.

It is an arithmetic number, because the mean of its divisors is an integer number (1261080).

Almost surely, 2^20790160 is an apocalyptic number.

20790160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20790160 is an abundant number, since it is smaller than the sum of its proper divisors (29653040).

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

20790160 is a wasteful number, since it uses less digits than its factorization.

20790160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11335 (or 11329 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 20790160 is about 4559.6227914160. The cubic root of 20790160 is about 274.9703990177.

Adding to 20790160 its reverse (6109702), we get a palindrome (26899862).

The spelling of 20790160 in words is "twenty million, seven hundred ninety thousand, one hundred sixty".