2556834 has 32 divisors (see below), whose sum is σ = 6189696. Its totient is φ = 687360.

The previous prime is 2556821. The next prime is 2556839. The reversal of 2556834 is 4386552.

It is a junction number, because it is equal to n+sod(n) for n = 2556795 and 2556804.

It is not an unprimeable number, because it can be changed into a prime (2556839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1077 + ... + 2504.

It is an arithmetic number, because the mean of its divisors is an integer number (193428).

2^2556834 is an apocalyptic number.

2556834 is an abundant number, since it is smaller than the sum of its proper divisors (3632862).

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

2556834 is a wasteful number, since it uses less digits than its factorization.

2556834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3610.

The product of its digits is 28800, while the sum is 33.

The square root of 2556834 is about 1599.0103189160. The cubic root of 2556834 is about 136.7416588887.

Subtracting from 2556834 its sum of digits (33), we obtain a square (2556801 = 1599²).

The spelling of 2556834 in words is "two million, five hundred fifty-six thousand, eight hundred thirty-four".