72923705 has 16 divisors (see below), whose sum is σ = 89553600. Its totient is φ = 56988480.

The previous prime is 72923689. The next prime is 72923737. The reversal of 72923705 is 50732927.

It is not a de Polignac number, because 72923705 - 2⁴ = 72923689 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 52115 + ... + 53495.

It is an arithmetic number, because the mean of its divisors is an integer number (5597100).

Almost surely, 2^72923705 is an apocalyptic number.

It is an amenable number.

72923705 is a deficient number, since it is larger than the sum of its proper divisors (16629895).

72923705 is a wasteful number, since it uses less digits than its factorization.

72923705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 72923705 is about 8539.5377509558. The cubic root of 72923705 is about 417.7882694858.

The spelling of 72923705 in words is "seventy-two million, nine hundred twenty-three thousand, seven hundred five".