2208871878 has 24 divisors (see below), whose sum is σ = 4513765272. Its totient is φ = 720620544.

The previous prime is 2208871877. The next prime is 2208871891. The reversal of 2208871878 is 8781788022.

It is a super-2 number, since 2×2208871878² = 9758229946838493768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2208871878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2208871871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70075 + ... + 96582.

It is an arithmetic number, because the mean of its divisors is an integer number (188073553).

Almost surely, 2^2208871878 is an apocalyptic number.

2208871878 is an abundant number, since it is smaller than the sum of its proper divisors (2304893394).

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

2208871878 is a wasteful number, since it uses less digits than its factorization.

2208871878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166756 (or 166709 counting only the distinct ones).

The product of its (nonzero) digits is 802816, while the sum is 51.

The square root of 2208871878 is about 46998.6369802359. The cubic root of 2208871878 is about 1302.3373881725.

The spelling of 2208871878 in words is "two billion, two hundred eight million, eight hundred seventy-one thousand, eight hundred seventy-eight".