2930805 has 12 divisors (see below), whose sum is σ = 5080140. Its totient is φ = 1563072.

The previous prime is 2930791. The next prime is 2930819. The reversal of 2930805 is 5080392.

It is an interprime number because it is at equal distance from previous prime (2930791) and next prime (2930819).

It can be written as a sum of positive squares in 2 ways, for example, as 599076 + 2331729 = 774^2 + 1527^2 .

It is not a de Polignac number, because 2930805 - 2⁴ = 2930789 is a prime.

2930805 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32520 + ... + 32609.

It is an arithmetic number, because the mean of its divisors is an integer number (423345).

2^2930805 is an apocalyptic number.

It is an amenable number.

2930805 is a deficient number, since it is larger than the sum of its proper divisors (2149335).

2930805 is a wasteful number, since it uses less digits than its factorization.

2930805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65140 (or 65137 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2930805 is about 1711.9594037243. The cubic root of 2930805 is about 143.1074713315.

The spelling of 2930805 in words is "two million, nine hundred thirty thousand, eight hundred five".