2678838 has 8 divisors (see below), whose sum is σ = 5357688. Its totient is φ = 892944.

The previous prime is 2678831. The next prime is 2678839. The reversal of 2678838 is 8388762.

It is a sphenic number, since it is the product of 3 distinct primes.

2678838 is an admirable number.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2678838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2678831) 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, 223231 + ... + 223242.

It is an arithmetic number, because the mean of its divisors is an integer number (669711).

2^2678838 is an apocalyptic number.

2678838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2678838 is a wasteful number, since it uses less digits than its factorization.

2678838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446478.

The product of its digits is 129024, while the sum is 42.

The square root of 2678838 is about 1636.7156136605. The cubic root of 2678838 is about 138.8829129755.

The spelling of 2678838 in words is "two million, six hundred seventy-eight thousand, eight hundred thirty-eight".