20563192 has 32 divisors (see below), whose sum is σ = 41832000. Its totient is φ = 9419904.

The previous prime is 20563189. The next prime is 20563237. The reversal of 20563192 is 29136502.

It is a self number, because there is not a number n which added to its sum of digits gives 20563192.

It is a congruent number.

It is an unprimeable number.

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, 14833 + ... + 16159.

It is an arithmetic number, because the mean of its divisors is an integer number (1307250).

Almost surely, 2^20563192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20563192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20916000).

20563192 is an abundant number, since it is smaller than the sum of its proper divisors (21268808).

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

20563192 is a wasteful number, since it uses less digits than its factorization.

20563192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495 (or 1491 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 20563192 is about 4534.6655885523. The cubic root of 20563192 is about 273.9661101460.

Adding to 20563192 its reverse (29136502), we get a palindrome (49699694).

The spelling of 20563192 in words is "twenty million, five hundred sixty-three thousand, one hundred ninety-two".