2784043872 has 120 divisors (see below), whose sum is σ = 8362370016. Its totient is φ = 908229888.

The previous prime is 2784043861. The next prime is 2784043903. The reversal of 2784043872 is 2783404872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 110398 + ... + 133250.

Almost surely, 2^2784043872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2784043872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4181185008).

2784043872 is an abundant number, since it is smaller than the sum of its proper divisors (5578326144).

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

2784043872 is a wasteful number, since it uses less digits than its factorization.

2784043872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22922 (or 22905 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 45.

The square root of 2784043872 is about 52764.0395724209. The cubic root of 2784043872 is about 1406.7773207453. Note that the first 3 decimals are identical.

The spelling of 2784043872 in words is "two billion, seven hundred eighty-four million, forty-three thousand, eight hundred seventy-two".