36072009 has 6 divisors (see below), whose sum is σ = 52104026. Its totient is φ = 24048000.

The previous prime is 36072007. The next prime is 36072017. The reversal of 36072009 is 90027063.

It can be written as a sum of positive squares in only one way, i.e., 25280784 + 10791225 = 5028^2 + 3285^2 .

It is not a de Polignac number, because 36072009 - 2¹ = 36072007 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (36072007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2003992 + ... + 2004009.

Almost surely, 2^36072009 is an apocalyptic number.

It is an amenable number.

36072009 is a deficient number, since it is larger than the sum of its proper divisors (16032017).

36072009 is a wasteful number, since it uses less digits than its factorization.

36072009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4008007 (or 4008004 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 36072009 is about 6005.9977522473. The cubic root of 36072009 is about 330.4127342627.

Adding to 36072009 its sum of digits (27), we get a square (36072036 = 6006²).

The spelling of 36072009 in words is "thirty-six million, seventy-two thousand, nine".