36540239 has 4 divisors (see below), whose sum is σ = 37390056. Its totient is φ = 35690424.

The previous prime is 36540233. The next prime is 36540241. The reversal of 36540239 is 93204563.

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

It is a cyclic number.

It is not a de Polignac number, because 36540239 - 2²⁰ = 35491663 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 (36540233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424844 + ... + 424929.

It is an arithmetic number, because the mean of its divisors is an integer number (9347514).

Almost surely, 2^36540239 is an apocalyptic number.

36540239 is a deficient number, since it is larger than the sum of its proper divisors (849817).

36540239 is an equidigital number, since it uses as much as digits as its factorization.

36540239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849816.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 36540239 is about 6044.8522728020. The cubic root of 36540239 is about 331.8362252913.

It can be divided in two parts, 365 and 40239, that added together give a palindrome (40604).

The spelling of 36540239 in words is "thirty-six million, five hundred forty thousand, two hundred thirty-nine".