20243005 has 12 divisors (see below), whose sum is σ = 25806420. Its totient is φ = 15240704.

The previous prime is 20242997. The next prime is 20243011. The reversal of 20243005 is 50034202.

It can be written as a sum of positive squares in 6 ways, for example, as 2762244 + 17480761 = 1662^2 + 4181^2 .

It is not a de Polignac number, because 20243005 - 2³ = 20242997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20243005.

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 11 ways as a sum of consecutive naturals, for example, 5560 + ... + 8449.

It is an arithmetic number, because the mean of its divisors is an integer number (2150535).

Almost surely, 2^20243005 is an apocalyptic number.

It is an amenable number.

20243005 is a deficient number, since it is larger than the sum of its proper divisors (5563415).

20243005 is a wasteful number, since it uses less digits than its factorization.

20243005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14048 (or 14031 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 20243005 is about 4499.2227106468. Note that the first 3 decimals coincide. The cubic root of 20243005 is about 272.5367007214.

Adding to 20243005 its reverse (50034202), we get a palindrome (70277207).

The spelling of 20243005 in words is "twenty million, two hundred forty-three thousand, five".