2878005 has 16 divisors (see below), whose sum is σ = 4959360. Its totient is φ = 1416768.

The previous prime is 2878003. The next prime is 2878021. The reversal of 2878005 is 5008782.

It is not a de Polignac number, because 2878005 - 2¹ = 2878003 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2878003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7185 + ... + 7574.

It is an arithmetic number, because the mean of its divisors is an integer number (309960).

2^2878005 is an apocalyptic number.

It is an amenable number.

2878005 is a deficient number, since it is larger than the sum of its proper divisors (2081355).

2878005 is a wasteful number, since it uses less digits than its factorization.

2878005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14780.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 2878005 is about 1696.4683905101. The cubic root of 2878005 is about 142.2428727293.

The spelling of 2878005 in words is "two million, eight hundred seventy-eight thousand, five".