2940805 has 16 divisors (see below), whose sum is σ = 4091904. Its totient is φ = 1987200.

The previous prime is 2940799. The next prime is 2940853. The reversal of 2940805 is 5080492.

It is a happy number.

It is not a de Polignac number, because 2940805 - 2¹⁹ = 2416517 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 1980 + ... + 3130.

It is an arithmetic number, because the mean of its divisors is an integer number (255744).

2^2940805 is an apocalyptic number.

It is an amenable number.

2940805 is a deficient number, since it is larger than the sum of its proper divisors (1151099).

2940805 is a wasteful number, since it uses less digits than its factorization.

2940805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2940805 is about 1714.8775466487. The cubic root of 2940805 is about 143.2700489813.

The spelling of 2940805 in words is "two million, nine hundred forty thousand, eight hundred five".