2830261 has 4 divisors (see below), whose sum is σ = 3234592. Its totient is φ = 2425932.

The previous prime is 2830249. The next prime is 2830277. The reversal of 2830261 is 1620382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1620382 = 2 ⋅810191.

It is a cyclic number.

It is not a de Polignac number, because 2830261 - 2⁵ = 2830229 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 (2830291) 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, 202155 + ... + 202168.

It is an arithmetic number, because the mean of its divisors is an integer number (808648).

2^2830261 is an apocalyptic number.

It is an amenable number.

2830261 is a deficient number, since it is larger than the sum of its proper divisors (404331).

2830261 is an equidigital number, since it uses as much as digits as its factorization.

2830261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404330.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2830261 is about 1682.3379565355. The cubic root of 2830261 is about 141.4519142215.

The spelling of 2830261 in words is "two million, eight hundred thirty thousand, two hundred sixty-one".