72329723 has 4 divisors (see below), whose sum is σ = 72346848. Its totient is φ = 72312600.

The previous prime is 72329717. The next prime is 72329731. The reversal of 72329723 is 32792327.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 72329723 - 2⁶ = 72329659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72329773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2798 + ... + 12348.

It is an arithmetic number, because the mean of its divisors is an integer number (18086712).

Almost surely, 2^72329723 is an apocalyptic number.

72329723 is a deficient number, since it is larger than the sum of its proper divisors (17125).

72329723 is an equidigital number, since it uses as much as digits as its factorization.

72329723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17124.

The product of its digits is 31752, while the sum is 35.

The square root of 72329723 is about 8504.6882952875. The cubic root of 72329723 is about 416.6508453370.

The spelling of 72329723 in words is "seventy-two million, three hundred twenty-nine thousand, seven hundred twenty-three".