2871212806 has 16 divisors (see below), whose sum is σ = 5369541120. Its totient is φ = 1118654280.

The previous prime is 2871212803. The next prime is 2871212833. The reversal of 2871212806 is 6082121782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2871212803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9321966 + ... + 9322273.

It is an arithmetic number, because the mean of its divisors is an integer number (335596320).

Almost surely, 2^2871212806 is an apocalyptic number.

2871212806 is a deficient number, since it is larger than the sum of its proper divisors (2498328314).

2871212806 is a wasteful number, since it uses less digits than its factorization.

2871212806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18644259.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 2871212806 is about 53583.6990697731. The cubic root of 2871212806 is about 1421.3088517460.

The spelling of 2871212806 in words is "two billion, eight hundred seventy-one million, two hundred twelve thousand, eight hundred six".