2840823 has 24 divisors (see below), whose sum is σ = 4446000. Its totient is φ = 1741824.

The previous prime is 2840801. The next prime is 2840857. The reversal of 2840823 is 3280482.

It is not a de Polignac number, because 2840823 - 2⁶ = 2840759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2840023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6103 + ... + 6551.

It is an arithmetic number, because the mean of its divisors is an integer number (185250).

2^2840823 is an apocalyptic number.

2840823 is a deficient number, since it is larger than the sum of its proper divisors (1605177).

2840823 is a wasteful number, since it uses less digits than its factorization.

2840823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 2840823 is about 1685.4741172738. The cubic root of 2840823 is about 141.6276530786.

It can be divided in two parts, 2840 and 823, that added together give a palindrome (3663).

The spelling of 2840823 in words is "two million, eight hundred forty thousand, eight hundred twenty-three".