2851630 has 16 divisors (see below), whose sum is σ = 5163264. Its totient is φ = 1133920.

The previous prime is 2851621. The next prime is 2851633. The reversal of 2851630 is 361582.

It is a happy number.

2851630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2851595 and 2851604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2851633) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1164 + ... + 2656.

It is an arithmetic number, because the mean of its divisors is an integer number (322704).

2^2851630 is an apocalyptic number.

2851630 is a deficient number, since it is larger than the sum of its proper divisors (2311634).

2851630 is a wasteful number, since it uses less digits than its factorization.

2851630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2851630 is about 1688.6769969417. The cubic root of 2851630 is about 141.8070181528.

It can be divided in two parts, 2851 and 630, that added together give a square (3481 = 59²).

The spelling of 2851630 in words is "two million, eight hundred fifty-one thousand, six hundred thirty".