8572139730 has 288 divisors, whose sum is σ = 28233878400. Its totient is φ = 1766223360.

The previous prime is 8572139713. The next prime is 8572139749. The reversal of 8572139730 is 379312758.

It is a happy number.

8572139730 is a `hidden beast` number, since 8 + 572 + 1 + 3 + 9 + 73 + 0 = 666.

8572139730 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 10595566 + ... + 10596374.

It is an arithmetic number, because the mean of its divisors is an integer number (98034300).

Almost surely, 2^8572139730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8572139730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14116939200).

8572139730 is an abundant number, since it is smaller than the sum of its proper divisors (19661738670).

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

8572139730 is a wasteful number, since it uses less digits than its factorization.

8572139730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990 (or 976 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 8572139730 is about 92585.8505928417. The cubic root of 8572139730 is about 2046.5848137478.

The spelling of 8572139730 in words is "eight billion, five hundred seventy-two million, one hundred thirty-nine thousand, seven hundred thirty".