2861271888 has 20 divisors (see below), whose sum is σ = 7391619168. Its totient is φ = 953757280.

The previous prime is 2861271859. The next prime is 2861271893. The reversal of 2861271888 is 8881721682.

It is a self number, because there is not a number n which added to its sum of digits gives 2861271888.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29804868 + ... + 29804963.

Almost surely, 2^2861271888 is an apocalyptic number.

It is an amenable number.

2861271888 is an abundant number, since it is smaller than the sum of its proper divisors (4530347280).

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

2861271888 is a wasteful number, since it uses less digits than its factorization.

2861271888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59609842 (or 59609836 counting only the distinct ones).

The product of its digits is 688128, while the sum is 51.

The square root of 2861271888 is about 53490.8579852670. The cubic root of 2861271888 is about 1419.6666360207. Note that the first 4 decimals are identical.

The spelling of 2861271888 in words is "two billion, eight hundred sixty-one million, two hundred seventy-one thousand, eight hundred eighty-eight".