2840045 has 12 divisors (see below), whose sum is σ = 3691476. Its totient is φ = 2096640.

The previous prime is 2840041. The next prime is 2840059. The reversal of 2840045 is 5400482.

It can be written as a sum of positive squares in 6 ways, for example, as 299209 + 2540836 = 547^2 + 1594^2 .

It is not a de Polignac number, because 2840045 - 2² = 2840041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2840045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2840041) 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, 836 + ... + 2525.

It is an arithmetic number, because the mean of its divisors is an integer number (307623).

2^2840045 is an apocalyptic number.

It is an amenable number.

2840045 is a deficient number, since it is larger than the sum of its proper divisors (851431).

2840045 is a wasteful number, since it uses less digits than its factorization.

2840045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3392 (or 3379 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 2840045 is about 1685.2433058760. The cubic root of 2840045 is about 141.6147229789.

The spelling of 2840045 in words is "two million, eight hundred forty thousand, forty-five".