2808894728117 has 4 divisors (see below), whose sum is σ = 2808898988940. Its totient is φ = 2808890467296.

The previous prime is 2808894728113. The next prime is 2808894728119. The reversal of 2808894728117 is 7118274988082.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 482144141956 + 2326750586161 = 694366^2 + 1525369^2 .

It is a cyclic number.

It is not a de Polignac number, because 2808894728117 - 2² = 2808894728113 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2808894728113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 907598 + ... + 2538015.

It is an arithmetic number, because the mean of its divisors is an integer number (702224747235).

Almost surely, 2^{2808894728117} is an apocalyptic number.

It is an amenable number.

2808894728117 is a deficient number, since it is larger than the sum of its proper divisors (4260823).

2808894728117 is an equidigital number, since it uses as much as digits as its factorization.

2808894728117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4260822.

The product of its (nonzero) digits is 28901376, while the sum is 65.

The spelling of 2808894728117 in words is "two trillion, eight hundred eight billion, eight hundred ninety-four million, seven hundred twenty-eight thousand, one hundred seventeen".