73239345 has 24 divisors (see below), whose sum is σ = 129034152. Its totient is φ = 38419200.

The previous prime is 73239307. The next prime is 73239347. The reversal of 73239345 is 54393237.

It can be written as a sum of positive squares in 4 ways, for example, as 9511056 + 63728289 = 3084^2 + 7983^2 .

It is not a de Polignac number, because 73239345 - 2⁷ = 73239217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73239347) 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 23 ways as a sum of consecutive naturals, for example, 10596 + ... + 16085.

It is an arithmetic number, because the mean of its divisors is an integer number (5376423).

Almost surely, 2^73239345 is an apocalyptic number.

It is an amenable number.

73239345 is a deficient number, since it is larger than the sum of its proper divisors (55794807).

73239345 is a wasteful number, since it uses less digits than its factorization.

73239345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26753 (or 26750 counting only the distinct ones).

The product of its digits is 68040, while the sum is 36.

The square root of 73239345 is about 8557.9988899275. The cubic root of 73239345 is about 418.3901811428.

The spelling of 73239345 in words is "seventy-three million, two hundred thirty-nine thousand, three hundred forty-five".