72722715 has 32 divisors (see below), whose sum is σ = 126255360. Its totient is φ = 35531136.

The previous prime is 72722707. The next prime is 72722737. The reversal of 72722715 is 51722727.

It is not a de Polignac number, because 72722715 - 2³ = 72722707 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 31 ways as a sum of consecutive naturals, for example, 25764 + ... + 28446.

It is an arithmetic number, because the mean of its divisors is an integer number (3945480).

Almost surely, 2^72722715 is an apocalyptic number.

72722715 is a deficient number, since it is larger than the sum of its proper divisors (53532645).

72722715 is a wasteful number, since it uses less digits than its factorization.

72722715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2843.

The product of its digits is 13720, while the sum is 33.

The square root of 72722715 is about 8527.7614295898. The cubic root of 72722715 is about 417.4040847229.

It can be divided in two parts, 72722 and 715, that added together give a palindrome (73437).

The spelling of 72722715 in words is "seventy-two million, seven hundred twenty-two thousand, seven hundred fifteen".