3030905 has 4 divisors (see below), whose sum is σ = 3637092. Its totient is φ = 2424720.

The previous prime is 3030893. The next prime is 3030931. The reversal of 3030905 is 5090303.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1666681 + 1364224 = 1291^2 + 1168^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3030905 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303086 + ... + 303095.

It is an arithmetic number, because the mean of its divisors is an integer number (909273).

Almost surely, 2^3030905 is an apocalyptic number.

It is an amenable number.

3030905 is a deficient number, since it is larger than the sum of its proper divisors (606187).

3030905 is an equidigital number, since it uses as much as digits as its factorization.

3030905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606186.

The product of its (nonzero) digits is 405, while the sum is 20.

The square root of 3030905 is about 1740.9494536028. The cubic root of 3030905 is about 144.7185185329.

The spelling of 3030905 in words is "three million, thirty thousand, nine hundred five".