20563162 has 16 divisors (see below), whose sum is σ = 31492800. Its totient is φ = 10067680.

The previous prime is 20563141. The next prime is 20563163. The reversal of 20563162 is 26136502.

It is not an unprimeable number, because it can be changed into a prime (20563163) 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, 25014 + ... + 25822.

It is an arithmetic number, because the mean of its divisors is an integer number (1968300).

Almost surely, 2^20563162 is an apocalyptic number.

20563162 is a deficient number, since it is larger than the sum of its proper divisors (10929638).

20563162 is a wasteful number, since it uses less digits than its factorization.

20563162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 20563162 is about 4534.6622806996. The cubic root of 20563162 is about 273.9659769146.

Adding to 20563162 its reverse (26136502), we get a palindrome (46699664).

The spelling of 20563162 in words is "twenty million, five hundred sixty-three thousand, one hundred sixty-two".