20244365 has 32 divisors (see below), whose sum is σ = 27234144. Its totient is φ = 14376960.

The previous prime is 20244361. The next prime is 20244383. The reversal of 20244365 is 56344202.

It can be written as a sum of positive squares in 16 ways, for example, as 4268356 + 15976009 = 2066^2 + 3997^2 .

It is not a de Polignac number, because 20244365 - 2² = 20244361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20244361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128867 + ... + 129023.

It is an arithmetic number, because the mean of its divisors is an integer number (851067).

Almost surely, 2^20244365 is an apocalyptic number.

It is an amenable number.

20244365 is a deficient number, since it is larger than the sum of its proper divisors (6989779).

20244365 is a wasteful number, since it uses less digits than its factorization.

20244365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 20244365 is about 4499.3738453256. The cubic root of 20244365 is about 272.5428039261.

Adding to 20244365 its reverse (56344202), we get a palindrome (76588567).

The spelling of 20244365 in words is "twenty million, two hundred forty-four thousand, three hundred sixty-five".