2885778 has 48 divisors (see below), whose sum is σ = 7350720. Its totient is φ = 800928.

The previous prime is 2885719. The next prime is 2885783. The reversal of 2885778 is 8775882.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4353 + ... + 4971.

It is an arithmetic number, because the mean of its divisors is an integer number (153140).

2^2885778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2885778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3675360).

2885778 is an abundant number, since it is smaller than the sum of its proper divisors (4464942).

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

2885778 is a wasteful number, since it uses less digits than its factorization.

2885778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 668 counting only the distinct ones).

The product of its digits is 250880, while the sum is 45.

The square root of 2885778 is about 1698.7577814391. The cubic root of 2885778 is about 142.3708155168.

It can be divided in two parts, 2885 and 778, that added together give a palindrome (3663).

The spelling of 2885778 in words is "two million, eight hundred eighty-five thousand, seven hundred seventy-eight".