36820393 has 4 divisors (see below), whose sum is σ = 37424068. Its totient is φ = 36216720.

The previous prime is 36820391. The next prime is 36820403. The reversal of 36820393 is 39302863.

36820393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 18045504 + 18774889 = 4248^2 + 4333^2 .

It is a cyclic number.

It is not a de Polignac number, because 36820393 - 2¹ = 36820391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36820391) 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, 301746 + ... + 301867.

It is an arithmetic number, because the mean of its divisors is an integer number (9356017).

Almost surely, 2^36820393 is an apocalyptic number.

It is an amenable number.

36820393 is a deficient number, since it is larger than the sum of its proper divisors (603675).

36820393 is an equidigital number, since it uses as much as digits as its factorization.

36820393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603674.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 36820393 is about 6067.9809656920. The cubic root of 36820393 is about 332.6821298528.

The spelling of 36820393 in words is "thirty-six million, eight hundred twenty thousand, three hundred ninety-three".