2808878 has 4 divisors (see below), whose sum is σ = 4213320. Its totient is φ = 1404438.

The previous prime is 2808877. The next prime is 2808881. The reversal of 2808878 is 8788082.

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

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2808877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702218 + ... + 702221.

It is an arithmetic number, because the mean of its divisors is an integer number (1053330).

2^2808878 is an apocalyptic number.

2808878 is a deficient number, since it is larger than the sum of its proper divisors (1404442).

2808878 is a wasteful number, since it uses less digits than its factorization.

2808878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404441.

The product of its (nonzero) digits is 57344, while the sum is 41.

The square root of 2808878 is about 1675.9707634681. The cubic root of 2808878 is about 141.0947839464.

The spelling of 2808878 in words is "two million, eight hundred eight thousand, eight hundred seventy-eight".