72730183 has 2 divisors, whose sum is σ = 72730184. Its totient is φ = 72730182.

The previous prime is 72730181. The next prime is 72730193. The reversal of 72730183 is 38103727.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72730183 - 2¹ = 72730181 is a prime.

Together with 72730181, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72730181) 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 as a sum of consecutive naturals, namely, 36365091 + 36365092.

It is an arithmetic number, because the mean of its divisors is an integer number (36365092).

Almost surely, 2^72730183 is an apocalyptic number.

72730183 is a deficient number, since it is larger than the sum of its proper divisors (1).

72730183 is an equidigital number, since it uses as much as digits as its factorization.

72730183 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 72730183 is about 8528.1992823808. The cubic root of 72730183 is about 417.4183721754.

The spelling of 72730183 in words is "seventy-two million, seven hundred thirty thousand, one hundred eighty-three".