72433009 has 8 divisors (see below), whose sum is σ = 80101152. Its totient is φ = 64945440.

The previous prime is 72432991. The next prime is 72433037. The reversal of 72433009 is 90033427.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72433009 - 2¹¹ = 72430961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72433079) 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 7 ways as a sum of consecutive naturals, for example, 44299 + ... + 45904.

It is an arithmetic number, because the mean of its divisors is an integer number (10012644).

Almost surely, 2^72433009 is an apocalyptic number.

It is an amenable number.

72433009 is a deficient number, since it is larger than the sum of its proper divisors (7668143).

72433009 is a wasteful number, since it uses less digits than its factorization.

72433009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90287.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 72433009 is about 8510.7584268384. The cubic root of 72433009 is about 416.8490751912.

It can be divided in two parts, 724 and 33009, that added together give a palindrome (33733).

The spelling of 72433009 in words is "seventy-two million, four hundred thirty-three thousand, nine".