2840383 has 18 divisors (see below), whose sum is σ = 3588264. Its totient is φ = 2247336.

The previous prime is 2840359. The next prime is 2840393. The reversal of 2840383 is 3830482.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 2840383 - 2⁹ = 2839871 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2840303) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 218485 + ... + 218497.

It is an arithmetic number, because the mean of its divisors is an integer number (199348).

2^2840383 is an apocalyptic number.

2840383 is a deficient number, since it is larger than the sum of its proper divisors (747881).

2840383 is an frugal number, since it uses more digits than its factorization.

2840383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61 (or 20 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 2840383 is about 1685.3435851481. The cubic root of 2840383 is about 141.6203407159.

Multiplying 2840383 by its sum of digits (28), we get a square (79530724 = 8918²).

Subtracting 2840383 from its reverse (3830482), we obtain a palindrome (990099).

It can be divided in two parts, 2840 and 383, that added together give a palindrome (3223).

The spelling of 2840383 in words is "two million, eight hundred forty thousand, three hundred eighty-three".