72720795 has 32 divisors (see below), whose sum is σ = 134972928. Its totient is φ = 32744448.

The previous prime is 72720793. The next prime is 72720829. The reversal of 72720795 is 59702727.

It is not a de Polignac number, because 72720795 - 2¹ = 72720793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72720793) 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 31 ways as a sum of consecutive naturals, for example, 1867 + ... + 12203.

It is an arithmetic number, because the mean of its divisors is an integer number (4217904).

Almost surely, 2^72720795 is an apocalyptic number.

72720795 is a deficient number, since it is larger than the sum of its proper divisors (62252133).

72720795 is a wasteful number, since it uses less digits than its factorization.

72720795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10419.

The product of its (nonzero) digits is 61740, while the sum is 39.

The square root of 72720795 is about 8527.6488553411. The cubic root of 72720795 is about 417.4004113044.

The spelling of 72720795 in words is "seventy-two million, seven hundred twenty thousand, seven hundred ninety-five".