2812878 has 36 divisors (see below), whose sum is σ = 6381024. Its totient is φ = 894600.

The previous prime is 2812867. The next prime is 2812883. The reversal of 2812878 is 8782182.

It is an Ulam number.

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 39583 + ... + 39653.

2^2812878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2812878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3190512).

2812878 is an abundant number, since it is smaller than the sum of its proper divisors (3568146).

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

2812878 is a wasteful number, since it uses less digits than its factorization.

2812878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 107 counting only the distinct ones).

The product of its digits is 14336, while the sum is 36.

The square root of 2812878 is about 1677.1636771645. The cubic root of 2812878 is about 141.1617278110.

The spelling of 2812878 in words is "two million, eight hundred twelve thousand, eight hundred seventy-eight".