872865728730 has 24 divisors (see below), whose sum is σ = 2269450894932. Its totient is φ = 232764194304.

The previous prime is 872865728723. The next prime is 872865728737. The reversal of 872865728730 is 37827568278.

872865728730 is a `hidden beast` number, since 8 + 7 + 28 + 6 + 572 + 8 + 7 + 30 = 666.

872865728730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (872865728723) and next prime (872865728737).

It can be written as a sum of positive squares in 2 ways, for example, as 800271587241 + 72594141489 = 894579^2 + 269433^2 .

It is not an unprimeable number, because it can be changed into a prime (872865728737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4849253959 + ... + 4849254138.

Almost surely, 2^872865728730 is an apocalyptic number.

872865728730 is an abundant number, since it is smaller than the sum of its proper divisors (1396585166202).

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

872865728730 is a wasteful number, since it uses less digits than its factorization.

872865728730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9698508110 (or 9698508107 counting only the distinct ones).

The product of its (nonzero) digits is 63221760, while the sum is 63.

The spelling of 872865728730 in words is "eight hundred seventy-two billion, eight hundred sixty-five million, seven hundred twenty-eight thousand, seven hundred thirty".