2856138 has 8 divisors (see below), whose sum is σ = 5712288. Its totient is φ = 952044.

The previous prime is 2856121. The next prime is 2856149. The reversal of 2856138 is 8316582.

It is a happy number.

2856138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

2856138 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 2856099 and 2856108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238006 + ... + 238017.

It is an arithmetic number, because the mean of its divisors is an integer number (714036).

2^2856138 is an apocalyptic number.

2856138 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.

2856138 is a wasteful number, since it uses less digits than its factorization.

2856138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476028.

The product of its digits is 11520, while the sum is 33.

The square root of 2856138 is about 1690.0112425662. The cubic root of 2856138 is about 141.8817040309.

The spelling of 2856138 in words is "two million, eight hundred fifty-six thousand, one hundred thirty-eight".