20243064 has 16 divisors (see below), whose sum is σ = 50607720. Its totient is φ = 6747680.

The previous prime is 20243063. The next prime is 20243071. The reversal of 20243064 is 46034202.

It is a self number, because there is not a number n which added to its sum of digits gives 20243064.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20243063) 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, 421707 + ... + 421754.

Almost surely, 2^20243064 is an apocalyptic number.

20243064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20243064 is an abundant number, since it is smaller than the sum of its proper divisors (30364656).

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

20243064 is a wasteful number, since it uses less digits than its factorization.

20243064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843470 (or 843466 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 20243064 is about 4499.2292673301. The cubic root of 20243064 is about 272.5369654984.

Adding to 20243064 its reverse (46034202), we get a palindrome (66277266).

The spelling of 20243064 in words is "twenty million, two hundred forty-three thousand, sixty-four".