2861305860 has 48 divisors (see below), whose sum is σ = 9156180096. Its totient is φ = 654012672.

The previous prime is 2861305829. The next prime is 2861305877. The reversal of 2861305860 is 685031682.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3405897 + ... + 3406736.

It is an arithmetic number, because the mean of its divisors is an integer number (190753752).

Almost surely, 2^2861305860 is an apocalyptic number.

2861305860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2861305860 is an abundant number, since it is smaller than the sum of its proper divisors (6294874236).

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

2861305860 is a wasteful number, since it uses less digits than its factorization.

2861305860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6812652 (or 6812650 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 2861305860 is about 53491.1755339140. The cubic root of 2861305860 is about 1419.6722545855.

The spelling of 2861305860 in words is "two billion, eight hundred sixty-one million, three hundred five thousand, eight hundred sixty".