2788878 has 8 divisors (see below), whose sum is σ = 5577768. Its totient is φ = 929624.

The previous prime is 2788831. The next prime is 2788889. The reversal of 2788878 is 8788872.

It is a sphenic number, since it is the product of 3 distinct primes.

2788878 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232401 + ... + 232412.

It is an arithmetic number, because the mean of its divisors is an integer number (697221).

2^2788878 is an apocalyptic number.

2788878 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2788878 is a wasteful number, since it uses less digits than its factorization.

2788878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464818.

The product of its digits is 401408, while the sum is 48.

The square root of 2788878 is about 1669.9934131607. The cubic root of 2788878 is about 140.7591078198.

It can be divided in two parts, 27888 and 78, that added together give a triangular number (27966 = T₂₃₆).

The spelling of 2788878 in words is "two million, seven hundred eighty-eight thousand, eight hundred seventy-eight".