72873536 has 14 divisors (see below), whose sum is σ = 144608550. Its totient is φ = 36436736.

The previous prime is 72873533. The next prime is 72873553. The reversal of 72873536 is 63537827.

It can be written as a sum of positive squares in only one way, i.e., 54760000 + 18113536 = 7400^2 + 4256^2 .

It is a junction number, because it is equal to n+sod(n) for n = 72873493 and 72873502.

It is not an unprimeable number, because it can be changed into a prime (72873533) 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 as a sum of consecutive naturals, namely, 569261 + ... + 569388.

Almost surely, 2^72873536 is an apocalyptic number.

It is an amenable number.

72873536 is a deficient number, since it is larger than the sum of its proper divisors (71735014).

72873536 is a wasteful number, since it uses less digits than its factorization.

72873536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138661 (or 1138651 counting only the distinct ones).

The product of its digits is 211680, while the sum is 41.

The square root of 72873536 is about 8536.5997914861. The cubic root of 72873536 is about 417.6924395216.

The spelling of 72873536 in words is "seventy-two million, eight hundred seventy-three thousand, five hundred thirty-six".