72240016 has 10 divisors (see below), whose sum is σ = 139965062. Its totient is φ = 36120000.

The previous prime is 72239989. The next prime is 72240031. The reversal of 72240016 is 61004227.

It can be written as a sum of positive squares in only one way, i.e., 45158400 + 27081616 = 6720^2 + 5204^2 .

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, 2257485 + ... + 2257516.

Almost surely, 2^72240016 is an apocalyptic number.

It is an amenable number.

72240016 is a deficient number, since it is larger than the sum of its proper divisors (67725046).

72240016 is a wasteful number, since it uses less digits than its factorization.

72240016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4515009 (or 4515003 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 72240016 is about 8499.4126855919. The cubic root of 72240016 is about 416.4785235558.

The spelling of 72240016 in words is "seventy-two million, two hundred forty thousand, sixteen".