2786666872 has 64 divisors (see below), whose sum is σ = 5761244160. Its totient is φ = 1253145600.

The previous prime is 2786666837. The next prime is 2786666891.

2786666872 is nontrivially palindromic in base 10.

It is a congruent 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, 4140328 + ... + 4141000.

It is an arithmetic number, because the mean of its divisors is an integer number (90019440).

Almost surely, 2^2786666872 is an apocalyptic number.

2786666872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2786666872 is an abundant number, since it is smaller than the sum of its proper divisors (2974577288).

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

2786666872 is a wasteful number, since it uses less digits than its factorization.

2786666872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124 (or 1120 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 58.

The square root of 2786666872 is about 52788.8896643981. The cubic root of 2786666872 is about 1407.2189826880.

The spelling of 2786666872 in words is "two billion, seven hundred eighty-six million, six hundred sixty-six thousand, eight hundred seventy-two".