2878839 has 12 divisors (see below), whose sum is σ = 4212000. Its totient is φ = 1894464.

The previous prime is 2878819. The next prime is 2878847. The reversal of 2878839 is 9388782.

It is not a de Polignac number, because 2878839 - 2¹² = 2874743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2878794 and 2878803.

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 11 ways as a sum of consecutive naturals, for example, 1314 + ... + 2735.

It is an arithmetic number, because the mean of its divisors is an integer number (351000).

2^2878839 is an apocalyptic number.

2878839 is a deficient number, since it is larger than the sum of its proper divisors (1333161).

2878839 is a wasteful number, since it uses less digits than its factorization.

2878839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4134 (or 4131 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 2878839 is about 1696.7141774618. The cubic root of 2878839 is about 142.2566113085.

The spelling of 2878839 in words is "two million, eight hundred seventy-eight thousand, eight hundred thirty-nine".