72715316 has 6 divisors (see below), whose sum is σ = 127251810. Its totient is φ = 36357656.

The previous prime is 72715309. The next prime is 72715327. The reversal of 72715316 is 61351727.

It can be written as a sum of positive squares in only one way, i.e., 61559716 + 11155600 = 7846^2 + 3340^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9089411 + ... + 9089418.

It is an arithmetic number, because the mean of its divisors is an integer number (21208635).

Almost surely, 2^72715316 is an apocalyptic number.

It is an amenable number.

72715316 is a deficient number, since it is larger than the sum of its proper divisors (54536494).

72715316 is a wasteful number, since it uses less digits than its factorization.

72715316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18178833 (or 18178831 counting only the distinct ones).

The product of its digits is 8820, while the sum is 32.

The square root of 72715316 is about 8527.3276001336. The cubic root of 72715316 is about 417.3899283136.

The spelling of 72715316 in words is "seventy-two million, seven hundred fifteen thousand, three hundred sixteen".