8721727488 has 340 divisors, whose sum is σ = 27405373248. Its totient is φ = 2760376320.

The previous prime is 8721727439. The next prime is 8721727493. The reversal of 8721727488 is 8847271278.

8721727488 is a `hidden beast` number, since 87 + 217 + 274 + 88 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (2809856) is a multiple of the sum of its prime factors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 164560870 + ... + 164560922.

Almost surely, 2^8721727488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8721727488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13702686624).

8721727488 is an abundant number, since it is smaller than the sum of its proper divisors (18683645760).

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

8721727488 is an frugal number, since it uses more digits than its factorization.

8721727488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 89 counting only the distinct ones).

The product of its digits is 2809856, while the sum is 54.

The square root of 8721727488 is about 93390.1894633478. The cubic root of 8721727488 is about 2058.4208439897.

The spelling of 8721727488 in words is "eight billion, seven hundred twenty-one million, seven hundred twenty-seven thousand, four hundred eighty-eight".