2820873 has 24 divisors (see below), whose sum is σ = 4362400. Its totient is φ = 1615680.

The previous prime is 2820869. The next prime is 2820877. The reversal of 2820873 is 3780282.

It is an interprime number because it is at equal distance from previous prime (2820869) and next prime (2820877).

It is not a de Polignac number, because 2820873 - 2² = 2820869 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2820873.

It is not an unprimeable number, because it can be changed into a prime (2820877) 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, 6693 + ... + 7101.

2^2820873 is an apocalyptic number.

It is an amenable number.

2820873 is a deficient number, since it is larger than the sum of its proper divisors (1541527).

2820873 is a wasteful number, since it uses less digits than its factorization.

2820873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 2820873 is about 1679.5454742281. The cubic root of 2820873 is about 141.2953419057.

The spelling of 2820873 in words is "two million, eight hundred twenty thousand, eight hundred seventy-three".