2012805 has 12 divisors (see below), whose sum is σ = 3488940. Its totient is φ = 1073472.

The previous prime is 2012789. The next prime is 2012807. The reversal of 2012805 is 5082102.

It can be written as a sum of positive squares in 2 ways, for example, as 1153476 + 859329 = 1074^2 + 927^2 .

It is not a de Polignac number, because 2012805 - 2⁴ = 2012789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012807) 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, 22320 + ... + 22409.

It is an arithmetic number, because the mean of its divisors is an integer number (290745).

2^2012805 is an apocalyptic number.

It is an amenable number.

2012805 is a deficient number, since it is larger than the sum of its proper divisors (1476135).

2012805 is a wasteful number, since it uses less digits than its factorization.

2012805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44740 (or 44737 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 2012805 is about 1418.7335902135. The cubic root of 2012805 is about 126.2604213206.

Adding to 2012805 its reverse (5082102), we get a palindrome (7094907).

The spelling of 2012805 in words is "two million, twelve thousand, eight hundred five".