20024563 has 12 divisors (see below), whose sum is σ = 21924784. Its totient is φ = 18180000.

The previous prime is 20024561. The next prime is 20024567. The reversal of 20024563 is 36542002.

It is a happy number.

It is not a de Polignac number, because 20024563 - 2¹ = 20024561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20024561) 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 11 ways as a sum of consecutive naturals, for example, 132538 + ... + 132688.

Almost surely, 2^20024563 is an apocalyptic number.

20024563 is a deficient number, since it is larger than the sum of its proper divisors (1900221).

20024563 is a wasteful number, since it uses less digits than its factorization.

20024563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 20024563 is about 4474.8813392089. The cubic root of 20024563 is about 271.5528399315.

Adding to 20024563 its reverse (36542002), we get a palindrome (56566565).

The spelling of 20024563 in words is "twenty million, twenty-four thousand, five hundred sixty-three".