2830305 has 8 divisors (see below), whose sum is σ = 4528512. Its totient is φ = 1509488.

The previous prime is 2830301. The next prime is 2830349. The reversal of 2830305 is 5030382.

2830305 = 388² + 389² + ... + 405².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2830305 - 2² = 2830301 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2830301) 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 7 ways as a sum of consecutive naturals, for example, 94329 + ... + 94358.

It is an arithmetic number, because the mean of its divisors is an integer number (566064).

2^2830305 is an apocalyptic number.

It is an amenable number.

2830305 is a deficient number, since it is larger than the sum of its proper divisors (1698207).

2830305 is a wasteful number, since it uses less digits than its factorization.

2830305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188695.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2830305 is about 1682.3510335242. The cubic root of 2830305 is about 141.4526472342.

Adding to 2830305 its reverse (5030382), we get a palindrome (7860687).

The spelling of 2830305 in words is "two million, eight hundred thirty thousand, three hundred five".