72242468840 has 32 divisors (see below), whose sum is σ = 164221291080. Its totient is φ = 28599078912.

The previous prime is 72242468827. The next prime is 72242468843. The reversal of 72242468840 is 4886424227.

It can be written as a sum of positive squares in 4 ways, for example, as 41088100804 + 31154368036 = 202702^2 + 176506^2 .

It is not an unprimeable number, because it can be changed into a prime (72242468843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9305717 + ... + 9313476.

Almost surely, 2^72242468840 is an apocalyptic number.

It is an amenable number.

72242468840 is an abundant number, since it is smaller than the sum of its proper divisors (91978822240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72242468840 is a wasteful number, since it uses less digits than its factorization.

72242468840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18619301 (or 18619297 counting only the distinct ones).

The product of its (nonzero) digits is 1376256, while the sum is 47.

The spelling of 72242468840 in words is "seventy-two billion, two hundred forty-two million, four hundred sixty-eight thousand, eight hundred forty".