2830505 has 4 divisors (see below), whose sum is σ = 3396612. Its totient is φ = 2264400.

The previous prime is 2830501. The next prime is 2830507. The reversal of 2830505 is 5050382.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5050382 = 2 ⋅2525191.

It can be written as a sum of positive squares in 2 ways, for example, as 1371241 + 1459264 = 1171^2 + 1208^2 .

It is not a de Polignac number, because 2830505 - 2² = 2830501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2830501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283046 + ... + 283055.

It is an arithmetic number, because the mean of its divisors is an integer number (849153).

2^2830505 is an apocalyptic number.

It is an amenable number.

2830505 is a deficient number, since it is larger than the sum of its proper divisors (566107).

2830505 is an equidigital number, since it uses as much as digits as its factorization.

2830505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566106.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2830505 is about 1682.4104731010. The cubic root of 2830505 is about 141.4559790145.

Adding to 2830505 its reverse (5050382), we get a palindrome (7880887).

The spelling of 2830505 in words is "two million, eight hundred thirty thousand, five hundred five".