20072365 has 4 divisors (see below), whose sum is σ = 24086844. Its totient is φ = 16057888.

The previous prime is 20072333. The next prime is 20072369. The reversal of 20072365 is 56327002.

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 6625476 + 13446889 = 2574^2 + 3667^2 .

It is a cyclic number.

It is not a de Polignac number, because 20072365 - 2⁵ = 20072333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20072369) 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, 2007232 + ... + 2007241.

It is an arithmetic number, because the mean of its divisors is an integer number (6021711).

Almost surely, 2^20072365 is an apocalyptic number.

It is an amenable number.

20072365 is a deficient number, since it is larger than the sum of its proper divisors (4014479).

20072365 is an equidigital number, since it uses as much as digits as its factorization.

20072365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4014478.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 20072365 is about 4480.2193026681. The cubic root of 20072365 is about 271.7687489868.

Adding to 20072365 its reverse (56327002), we get a palindrome (76399367).

The spelling of 20072365 in words is "twenty million, seventy-two thousand, three hundred sixty-five".