72816344 has 16 divisors (see below), whose sum is σ = 142467120. Its totient is φ = 34825120.

The previous prime is 72816319. The next prime is 72816347. The reversal of 72816344 is 44361827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72816347) 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 3 ways as a sum of consecutive naturals, for example, 197687 + ... + 198054.

It is an arithmetic number, because the mean of its divisors is an integer number (8904195).

Almost surely, 2^72816344 is an apocalyptic number.

It is an amenable number.

72816344 is a deficient number, since it is larger than the sum of its proper divisors (69650776).

72816344 is a wasteful number, since it uses less digits than its factorization.

72816344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395770 (or 395766 counting only the distinct ones).

The product of its digits is 32256, while the sum is 35.

The square root of 72816344 is about 8533.2493225031. The cubic root of 72816344 is about 417.5831409595.

The spelling of 72816344 in words is "seventy-two million, eight hundred sixteen thousand, three hundred forty-four".