8157340620 has 288 divisors, whose sum is σ = 30010466304. Its totient is φ = 1766361600.

The previous prime is 8157340619. The next prime is 8157340663. The reversal of 8157340620 is 260437518.

8157340620 is a `hidden beast` number, since 81 + 573 + 4 + 0 + 6 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 792829 + ... + 803051.

It is an arithmetic number, because the mean of its divisors is an integer number (104203008).

Almost surely, 2^8157340620 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 8157340620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15005233152).

8157340620 is an abundant number, since it is smaller than the sum of its proper divisors (21853125684).

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

8157340620 is a wasteful number, since it uses less digits than its factorization.

8157340620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10293 (or 10288 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 8157340620 is about 90317.9972098585. The cubic root of 8157340620 is about 2013.0266868352.

The spelling of 8157340620 in words is "eight billion, one hundred fifty-seven million, three hundred forty thousand, six hundred twenty".