2847921384 has 128 divisors (see below), whose sum is σ = 9065779200. Its totient is φ = 723959040.

The previous prime is 2847921359. The next prime is 2847921407. The reversal of 2847921384 is 4831297482.

It is a super-2 number, since 2×2847921384² = 16221312418888950912, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70462 + ... + 103250.

It is an arithmetic number, because the mean of its divisors is an integer number (70826400).

Almost surely, 2^2847921384 is an apocalyptic number.

2847921384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2847921384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4532889600).

2847921384 is an abundant number, since it is smaller than the sum of its proper divisors (6217857816).

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

2847921384 is a wasteful number, since it uses less digits than its factorization.

2847921384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32863 (or 32859 counting only the distinct ones).

The product of its digits is 774144, while the sum is 48.

The square root of 2847921384 is about 53365.9196866315. The cubic root of 2847921384 is about 1417.4551696145.

The spelling of 2847921384 in words is "two billion, eight hundred forty-seven million, nine hundred twenty-one thousand, three hundred eighty-four".