2830221 has 24 divisors (see below), whose sum is σ = 4469920. Its totient is φ = 1784592.

The previous prime is 2830187. The next prime is 2830229. The reversal of 2830221 is 1220382.

It is a happy number.

It is not a de Polignac number, because 2830221 - 2⁹ = 2829709 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2830194 and 2830203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2830229) 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 23 ways as a sum of consecutive naturals, for example, 4311 + ... + 4923.

2^2830221 is an apocalyptic number.

It is an amenable number.

2830221 is a deficient number, since it is larger than the sum of its proper divisors (1639699).

2830221 is an equidigital number, since it uses as much as digits as its factorization.

2830221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2830221 is about 1682.3260682757. The cubic root of 2830221 is about 141.4512478397.

The spelling of 2830221 in words is "two million, eight hundred thirty thousand, two hundred twenty-one".