2830745 has 4 divisors (see below), whose sum is σ = 3396900. Its totient is φ = 2264592.

The previous prime is 2830741. The next prime is 2830781. The reversal of 2830745 is 5470382.

It is a happy number.

2830745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5470382 = 2 ⋅2735191.

It can be written as a sum of positive squares in 2 ways, for example, as 1466521 + 1364224 = 1211^2 + 1168^2 .

It is a cyclic number.

It is not a de Polignac number, because 2830745 - 2² = 2830741 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2830741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283070 + ... + 283079.

It is an arithmetic number, because the mean of its divisors is an integer number (849225).

2^2830745 is an apocalyptic number.

It is an amenable number.

2830745 is a deficient number, since it is larger than the sum of its proper divisors (566155).

2830745 is an equidigital number, since it uses as much as digits as its factorization.

2830745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566154.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 2830745 is about 1682.4817978213. The cubic root of 2830745 is about 141.4599769437.

The spelling of 2830745 in words is "two million, eight hundred thirty thousand, seven hundred forty-five".