2712638890 has 32 divisors (see below), whose sum is σ = 5344564176. Its totient is φ = 985167360.

The previous prime is 2712638867. The next prime is 2712638893. The reversal of 2712638890 is 988362172.

It is a Cunningham number, because it is equal to 52083²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 88228449 + 2624410441 = 9393^2 + 51229^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2712638890.

It is not an unprimeable number, because it can be changed into a prime (2712638893) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 163107 + ... + 178966.

Almost surely, 2^2712638890 is an apocalyptic number.

2712638890 is a deficient number, since it is larger than the sum of its proper divisors (2631925286).

2712638890 is a wasteful number, since it uses less digits than its factorization.

2712638890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342154.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 2712638890 is about 52083.0000096001. Note that the first 5 decimals coincide. The cubic root of 2712638890 is about 1394.6460289878.

The spelling of 2712638890 in words is "two billion, seven hundred twelve million, six hundred thirty-eight thousand, eight hundred ninety".