20244265 has 4 divisors (see below), whose sum is σ = 24293124. Its totient is φ = 16195408.

The previous prime is 20244247. The next prime is 20244269. The reversal of 20244265 is 56244202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4963984 + 15280281 = 2228^2 + 3909^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20244265 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20244269) 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 3 ways as a sum of consecutive naturals, for example, 2024422 + ... + 2024431.

It is an arithmetic number, because the mean of its divisors is an integer number (6073281).

Almost surely, 2^20244265 is an apocalyptic number.

It is an amenable number.

20244265 is a deficient number, since it is larger than the sum of its proper divisors (4048859).

20244265 is an equidigital number, since it uses as much as digits as its factorization.

20244265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4048858.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 20244265 is about 4499.3627326545. The cubic root of 20244265 is about 272.5423551704.

Adding to 20244265 its reverse (56244202), we get a palindrome (76488467).

The spelling of 20244265 in words is "twenty million, two hundred forty-four thousand, two hundred sixty-five".