2878813 has 4 divisors (see below), whose sum is σ = 3290080. Its totient is φ = 2467548.

The previous prime is 2878793. The next prime is 2878819. The reversal of 2878813 is 3188782.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2878813 - 2²¹ = 781661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2878819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205623 + ... + 205636.

It is an arithmetic number, because the mean of its divisors is an integer number (822520).

2^2878813 is an apocalyptic number.

It is an amenable number.

2878813 is a deficient number, since it is larger than the sum of its proper divisors (411267).

2878813 is an equidigital number, since it uses as much as digits as its factorization.

2878813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411266.

The product of its digits is 21504, while the sum is 37.

The square root of 2878813 is about 1696.7065155766. The cubic root of 2878813 is about 142.2561830475.

The spelling of 2878813 in words is "two million, eight hundred seventy-eight thousand, eight hundred thirteen".