72793729 has 8 divisors (see below), whose sum is σ = 73631232. Its totient is φ = 71961360.

The previous prime is 72793727. The next prime is 72793757. The reversal of 72793729 is 92739727.

It is a happy number.

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 72793729 - 2¹ = 72793727 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72793727) 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, 31942 + ... + 34144.

It is an arithmetic number, because the mean of its divisors is an integer number (9203904).

Almost surely, 2^72793729 is an apocalyptic number.

It is an amenable number.

72793729 is a deficient number, since it is larger than the sum of its proper divisors (837503).

72793729 is a wasteful number, since it uses less digits than its factorization.

72793729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567.

The product of its digits is 333396, while the sum is 46.

The square root of 72793729 is about 8531.9241088983. The cubic root of 72793729 is about 417.5399060664.

The spelling of 72793729 in words is "seventy-two million, seven hundred ninety-three thousand, seven hundred twenty-nine".