2787893856 has 96 divisors (see below), whose sum is σ = 8870601600. Its totient is φ = 844813440.

The previous prime is 2787893831. The next prime is 2787893947. The reversal of 2787893856 is 6583987872.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 2787893793 and 2787893802.

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, 137166 + ... + 156173.

It is an arithmetic number, because the mean of its divisors is an integer number (92402100).

Almost surely, 2^2787893856 is an apocalyptic number.

It is an amenable number.

2787893856 is an abundant number, since it is smaller than the sum of its proper divisors (6082707744).

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

2787893856 is a wasteful number, since it uses less digits than its factorization.

2787893856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293369 (or 293355 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 63.

The square root of 2787893856 is about 52800.5099975370. The cubic root of 2787893856 is about 1407.4254876755.

The spelling of 2787893856 in words is "two billion, seven hundred eighty-seven million, eight hundred ninety-three thousand, eight hundred fifty-six".