2821872 has 20 divisors (see below), whose sum is σ = 7289960. Its totient is φ = 940608.

The previous prime is 2821867. The next prime is 2821877. The reversal of 2821872 is 2781282.

It is a happy number.

2821872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2821867) and next prime (2821877).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2821877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29347 + ... + 29442.

It is an arithmetic number, because the mean of its divisors is an integer number (364498).

2^2821872 is an apocalyptic number.

It is an amenable number.

2821872 is an abundant number, since it is smaller than the sum of its proper divisors (4468088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2821872 is a wasteful number, since it uses less digits than its factorization.

2821872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58800 (or 58794 counting only the distinct ones).

The product of its digits is 3584, while the sum is 30.

The square root of 2821872 is about 1679.8428497928. The cubic root of 2821872 is about 141.3120196490.

The spelling of 2821872 in words is "two million, eight hundred twenty-one thousand, eight hundred seventy-two".