8373732872 has 12 divisors (see below), whose sum is σ = 15701234445. Its totient is φ = 4186737024.

The previous prime is 8373732869. The next prime is 8373732883. The reversal of 8373732872 is 2782373738.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 6933226756 + 1440506116 = 83266^2 + 37954^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=64706.

It is a super-2 number, since 2×8373732872² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8373732872.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 242648 + ... + 275000.

Almost surely, 2^8373732872 is an apocalyptic number.

It is an amenable number.

8373732872 is a deficient number, since it is larger than the sum of its proper divisors (7327501573).

8373732872 is an frugal number, since it uses more digits than its factorization.

8373732872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64712 (or 32355 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 50.

The square root of 8373732872 is about 91508.1027669135. The cubic root of 8373732872 is about 2030.6716271204.

Multiplying 8373732872 by its sum of digits (50), we get a square (418686643600 = 647060²).

The spelling of 8373732872 in words is "eight billion, three hundred seventy-three million, seven hundred thirty-two thousand, eight hundred seventy-two".