2830811 has 4 divisors (see below), whose sum is σ = 2845824. Its totient is φ = 2815800.

The previous prime is 2830801. The next prime is 2830813. The reversal of 2830811 is 1180382.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2830811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2830813) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 7220 + ... + 7601.

It is an arithmetic number, because the mean of its divisors is an integer number (711456).

2^2830811 is an apocalyptic number.

2830811 is a deficient number, since it is larger than the sum of its proper divisors (15013).

2830811 is a wasteful number, since it uses less digits than its factorization.

2830811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15012.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 2830811 is about 1682.5014115893. The cubic root of 2830811 is about 141.4610763346.

The spelling of 2830811 in words is "two million, eight hundred thirty thousand, eight hundred eleven".