2940505 has 16 divisors (see below), whose sum is σ = 3714048. Its totient is φ = 2232000.

The previous prime is 2940449. The next prime is 2940517. The reversal of 2940505 is 5050492.

It is a de Polignac number, because none of the positive numbers 2^k-2940505 is a prime.

2940505 is a lucky number.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 2940505.

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 15 ways as a sum of consecutive naturals, for example, 9300 + ... + 9610.

It is an arithmetic number, because the mean of its divisors is an integer number (232128).

2^2940505 is an apocalyptic number.

It is an amenable number.

2940505 is a deficient number, since it is larger than the sum of its proper divisors (773543).

2940505 is a wasteful number, since it uses less digits than its factorization.

2940505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 2940505 is about 1714.7900746155. The cubic root of 2940505 is about 143.2651770187.

Adding to 2940505 its reverse (5050492), we get a palindrome (7990997).

The spelling of 2940505 in words is "two million, nine hundred forty thousand, five hundred five".