2902005 has 12 divisors (see below), whose sum is σ = 5030220. Its totient is φ = 1547712.

The previous prime is 2901989. The next prime is 2902049. The reversal of 2902005 is 5002092.

It can be written as a sum of positive squares in 2 ways, for example, as 1418481 + 1483524 = 1191^2 + 1218^2 .

It is not a de Polignac number, because 2902005 - 2⁴ = 2901989 is a prime.

2902005 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32200 + ... + 32289.

It is an arithmetic number, because the mean of its divisors is an integer number (419185).

2^2902005 is an apocalyptic number.

It is an amenable number.

2902005 is a deficient number, since it is larger than the sum of its proper divisors (2128215).

2902005 is a wasteful number, since it uses less digits than its factorization.

2902005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64500 (or 64497 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 2902005 is about 1703.5272231461. The cubic root of 2902005 is about 142.6371717008.

Adding to 2902005 its reverse (5002092), we get a palindrome (7904097).

The spelling of 2902005 in words is "two million, nine hundred two thousand, five".