3020805 has 12 divisors (see below), whose sum is σ = 5236140. Its totient is φ = 1611072.

The previous prime is 3020803. The next prime is 3020807. The reversal of 3020805 is 5080203.

It is an interprime number because it is at equal distance from previous prime (3020803) and next prime (3020807).

It can be written as a sum of positive squares in 2 ways, for example, as 1595169 + 1425636 = 1263^2 + 1194^2 .

It is not a de Polignac number, because 3020805 - 2¹ = 3020803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3020803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33520 + ... + 33609.

It is an arithmetic number, because the mean of its divisors is an integer number (436345).

Almost surely, 2^3020805 is an apocalyptic number.

It is an amenable number.

3020805 is a deficient number, since it is larger than the sum of its proper divisors (2215335).

3020805 is a wasteful number, since it uses less digits than its factorization.

3020805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67140 (or 67137 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 3020805 is about 1738.0463169893. The cubic root of 3020805 is about 144.5575893024.

The spelling of 3020805 in words is "three million, twenty thousand, eight hundred five".