2805216140 has 12 divisors (see below), whose sum is σ = 5890953936. Its totient is φ = 1122086448.

The previous prime is 2805216119. The next prime is 2805216157. The reversal of 2805216140 is 416125082.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70130384 + ... + 70130423.

It is an arithmetic number, because the mean of its divisors is an integer number (490912828).

Almost surely, 2^2805216140 is an apocalyptic number.

2805216140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2805216140 is an abundant number, since it is smaller than the sum of its proper divisors (3085737796).

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

2805216140 is a wasteful number, since it uses less digits than its factorization.

2805216140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140260816 (or 140260814 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 2805216140 is about 52964.2911781136. The cubic root of 2805216140 is about 1410.3344343599.

The spelling of 2805216140 in words is "two billion, eight hundred five million, two hundred sixteen thousand, one hundred forty".