8571397120 has 352 divisors, whose sum is σ = 25255722240. Its totient is φ = 2746613760.

The previous prime is 8571397117. The next prime is 8571397129. The reversal of 8571397120 is 217931758.

It is a tau number, because it is divible by the number of its divisors (352).

It is not an unprimeable number, because it can be changed into a prime (8571397129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16839426 + ... + 16839934.

Almost surely, 2^8571397120 is an apocalyptic number.

8571397120 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8571397120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12627861120).

8571397120 is an abundant number, since it is smaller than the sum of its proper divisors (16684325120).

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

8571397120 is a wasteful number, since it uses less digits than its factorization.

8571397120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581 (or 563 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 8571397120 is about 92581.8401199717. The cubic root of 8571397120 is about 2046.5257130532.

The spelling of 8571397120 in words is "eight billion, five hundred seventy-one million, three hundred ninety-seven thousand, one hundred twenty".