72823987240 has 16 divisors (see below), whose sum is σ = 163853971380. Its totient is φ = 29129594880.

The previous prime is 72823987213. The next prime is 72823987241. The reversal of 72823987240 is 4278932827.

It can be written as a sum of positive squares in 2 ways, for example, as 64220682724 + 8603304516 = 253418^2 + 92754^2 .

It is not an unprimeable number, because it can be changed into a prime (72823987241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 910299801 + ... + 910299880.

Almost surely, 2^72823987240 is an apocalyptic number.

It is an amenable number.

72823987240 is an abundant number, since it is smaller than the sum of its proper divisors (91029984140).

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

72823987240 is a wasteful number, since it uses less digits than its factorization.

72823987240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820599692 (or 1820599688 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 72823987240 in words is "seventy-two billion, eight hundred twenty-three million, nine hundred eighty-seven thousand, two hundred forty".