2871721092 has 12 divisors (see below), whose sum is σ = 6700682576. Its totient is φ = 957240360.

The previous prime is 2871721091. The next prime is 2871721117. The reversal of 2871721092 is 2901271782.

2871721092 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 2871721092.

It is not an unprimeable number, because it can be changed into a prime (2871721091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119655034 + ... + 119655057.

Almost surely, 2^2871721092 is an apocalyptic number.

It is an amenable number.

2871721092 is an abundant number, since it is smaller than the sum of its proper divisors (3828961484).

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

2871721092 is a wasteful number, since it uses less digits than its factorization.

2871721092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239310098 (or 239310096 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 39.

The square root of 2871721092 is about 53588.4417761890. The cubic root of 2871721092 is about 1421.3927174402.

The spelling of 2871721092 in words is "two billion, eight hundred seventy-one million, seven hundred twenty-one thousand, ninety-two".