73081239 has 32 divisors (see below), whose sum is σ = 127887360. Its totient is φ = 35964000.

The previous prime is 73081219. The next prime is 73081273. The reversal of 73081239 is 93218037.

It is not a de Polignac number, because 73081239 - 2¹² = 73077143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73081219) 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 31 ways as a sum of consecutive naturals, for example, 3937 + ... + 12714.

It is an arithmetic number, because the mean of its divisors is an integer number (3996480).

Almost surely, 2^73081239 is an apocalyptic number.

73081239 is a deficient number, since it is larger than the sum of its proper divisors (54806121).

73081239 is a wasteful number, since it uses less digits than its factorization.

73081239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16691.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 73081239 is about 8548.7565762513. The cubic root of 73081239 is about 418.0888965634.

The spelling of 73081239 in words is "seventy-three million, eighty-one thousand, two hundred thirty-nine".