20563160 has 16 divisors (see below), whose sum is σ = 46267200. Its totient is φ = 8225248.

The previous prime is 20563141. The next prime is 20563163. The reversal of 20563160 is 6136502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20563163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257000 + ... + 257079.

It is an arithmetic number, because the mean of its divisors is an integer number (2891700).

Almost surely, 2^20563160 is an apocalyptic number.

20563160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20563160 is an abundant number, since it is smaller than the sum of its proper divisors (25704040).

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

20563160 is a wasteful number, since it uses less digits than its factorization.

20563160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514090 (or 514086 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 20563160 is about 4534.6620601760. The cubic root of 20563160 is about 273.9659680325.

Adding to 20563160 its reverse (6136502), we get a palindrome (26699662).

The spelling of 20563160 in words is "twenty million, five hundred sixty-three thousand, one hundred sixty".