72793291 has 2 divisors, whose sum is σ = 72793292. Its totient is φ = 72793290.

The previous prime is 72793267. The next prime is 72793307. The reversal of 72793291 is 19239727.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72793291 - 2⁹ = 72792779 is a prime.

It is a super-2 number, since 2×72793291² = 10597726429221362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72793211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36396645 + 36396646.

It is an arithmetic number, because the mean of its divisors is an integer number (36396646).

Almost surely, 2^72793291 is an apocalyptic number.

72793291 is a deficient number, since it is larger than the sum of its proper divisors (1).

72793291 is an equidigital number, since it uses as much as digits as its factorization.

72793291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47628, while the sum is 40.

The square root of 72793291 is about 8531.8984405582. The cubic root of 72793291 is about 417.5390686186.

The spelling of 72793291 in words is "seventy-two million, seven hundred ninety-three thousand, two hundred ninety-one".