20536365 has 16 divisors (see below), whose sum is σ = 32940288. Its totient is φ = 10925376.

The previous prime is 20536361. The next prime is 20536381. The reversal of 20536365 is 56363502.

It is not a de Polignac number, because 20536365 - 2² = 20536361 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20536361) 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 15 ways as a sum of consecutive naturals, for example, 5467 + ... + 8423.

It is an arithmetic number, because the mean of its divisors is an integer number (2058768).

Almost surely, 2^20536365 is an apocalyptic number.

It is an amenable number.

20536365 is a deficient number, since it is larger than the sum of its proper divisors (12403923).

20536365 is a wasteful number, since it uses less digits than its factorization.

20536365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3428.

The product of its (nonzero) digits is 16200, while the sum is 30.

The square root of 20536365 is about 4531.7066321641. The cubic root of 20536365 is about 273.8469184154.

Adding to 20536365 its reverse (56363502), we get a palindrome (76899867).

The spelling of 20536365 in words is "twenty million, five hundred thirty-six thousand, three hundred sixty-five".