36288209 has 4 divisors (see below), whose sum is σ = 36308916. Its totient is φ = 36267504.

The previous prime is 36288167. The next prime is 36288211. The reversal of 36288209 is 90288263.

It is a happy number.

36288209 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, and also an emirpimes, since its reverse is a distinct semiprime: 90288263 = 13 ⋅6945251.

It can be written as a sum of positive squares in 2 ways, for example, as 32809984 + 3478225 = 5728^2 + 1865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36288209 is a prime.

It is a super-2 number, since 2×36288209² = 2633668224855362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36288269) 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, 7454 + ... + 11319.

It is an arithmetic number, because the mean of its divisors is an integer number (9077229).

Almost surely, 2^36288209 is an apocalyptic number.

It is an amenable number.

36288209 is a deficient number, since it is larger than the sum of its proper divisors (20707).

36288209 is a wasteful number, since it uses less digits than its factorization.

36288209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20706.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 36288209 is about 6023.9695384356. The cubic root of 36288209 is about 331.0715367632.

The spelling of 36288209 in words is "thirty-six million, two hundred eighty-eight thousand, two hundred nine".