2851834 has 4 divisors (see below), whose sum is σ = 4277754. Its totient is φ = 1425916.

The previous prime is 2851829. The next prime is 2851841. The reversal of 2851834 is 4381582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1755625 + 1096209 = 1325^2 + 1047^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2851796 and 2851805.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712957 + ... + 712960.

2^2851834 is an apocalyptic number.

2851834 is a deficient number, since it is larger than the sum of its proper divisors (1425920).

2851834 is a wasteful number, since it uses less digits than its factorization.

2851834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425919.

The product of its digits is 7680, while the sum is 31.

The square root of 2851834 is about 1688.7373981765. The cubic root of 2851834 is about 141.8103996038.

The spelling of 2851834 in words is "two million, eight hundred fifty-one thousand, eight hundred thirty-four".