2805143004 has 144 divisors (see below), whose sum is σ = 7799500800. Its totient is φ = 846236160.

The previous prime is 2805142933. The next prime is 2805143039. The reversal of 2805143004 is 4003415082.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3775057 + ... + 3775799.

It is an arithmetic number, because the mean of its divisors is an integer number (54163200).

Almost surely, 2^2805143004 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 2805143004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3899750400).

2805143004 is an abundant number, since it is smaller than the sum of its proper divisors (4994357796).

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

2805143004 is a wasteful number, since it uses less digits than its factorization.

2805143004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000 (or 995 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 2805143004 is about 52963.6007461728. The cubic root of 2805143004 is about 1410.3221777742.

Adding to 2805143004 its reverse (4003415082), we get a palindrome (6808558086).

The spelling of 2805143004 in words is "two billion, eight hundred five million, one hundred forty-three thousand, four".