2808258257 has 12 divisors (see below), whose sum is σ = 3268275120. Its totient is φ = 2405954376.

The previous prime is 2808258217. The next prime is 2808258263. The reversal of 2808258257 is 7528528082.

It is a de Polignac number, because none of the positive numbers 2^k-2808258257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2808258217) 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 11 ways as a sum of consecutive naturals, for example, 102794 + ... + 127212.

It is an arithmetic number, because the mean of its divisors is an integer number (272356260).

Almost surely, 2^2808258257 is an apocalyptic number.

It is an amenable number.

2808258257 is a deficient number, since it is larger than the sum of its proper divisors (460016863).

2808258257 is a wasteful number, since it uses less digits than its factorization.

2808258257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26780 (or 26773 counting only the distinct ones).

The product of its (nonzero) digits is 716800, while the sum is 47.

The square root of 2808258257 is about 52993.0019625233. The cubic root of 2808258257 is about 1410.8440626344.

The spelling of 2808258257 in words is "two billion, eight hundred eight million, two hundred fifty-eight thousand, two hundred fifty-seven".