72718144 has 14 divisors (see below), whose sum is σ = 144300194. Its totient is φ = 36359040.

The previous prime is 72718123. The next prime is 72718181. The reversal of 72718144 is 44181727.

It can be written as a sum of positive squares in only one way, i.e., 62220544 + 10497600 = 7888^2 + 3240^2 .

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, 568047 + ... + 568174.

Almost surely, 2^72718144 is an apocalyptic number.

It is an amenable number.

72718144 is a deficient number, since it is larger than the sum of its proper divisors (71582050).

72718144 is a wasteful number, since it uses less digits than its factorization.

72718144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136233 (or 1136223 counting only the distinct ones).

The product of its digits is 12544, while the sum is 34.

The square root of 72718144 is about 8527.4934183498. The cubic root of 72718144 is about 417.3953392021.

The spelling of 72718144 in words is "seventy-two million, seven hundred eighteen thousand, one hundred forty-four".