2871791620 has 24 divisors (see below), whose sum is σ = 6037819200. Its totient is φ = 1147372512.

The previous prime is 2871791597. The next prime is 2871791621. The reversal of 2871791620 is 261971782.

It is not an unprimeable number, because it can be changed into a prime (2871791621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66400 + ... + 100759.

It is an arithmetic number, because the mean of its divisors is an integer number (251575800).

Almost surely, 2^2871791620 is an apocalyptic number.

2871791620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2871791620 is an abundant number, since it is smaller than the sum of its proper divisors (3166027580).

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

2871791620 is a wasteful number, since it uses less digits than its factorization.

2871791620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168027 (or 168025 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 2871791620 is about 53589.0998244979. The cubic root of 2871791620 is about 1421.4043535708.

The spelling of 2871791620 in words is "two billion, eight hundred seventy-one million, seven hundred ninety-one thousand, six hundred twenty".