2821885 has 8 divisors (see below), whose sum is σ = 3694176. Its totient is φ = 2052240.

The previous prime is 2821877. The next prime is 2821909. The reversal of 2821885 is 5881282.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2821885 - 2³ = 2821877 is a prime.

It is an Ulam number.

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 2821885.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25599 + ... + 25708.

It is an arithmetic number, because the mean of its divisors is an integer number (461772).

2^2821885 is an apocalyptic number.

It is an amenable number.

2821885 is a deficient number, since it is larger than the sum of its proper divisors (872291).

2821885 is a wasteful number, since it uses less digits than its factorization.

2821885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51323.

The product of its digits is 10240, while the sum is 34.

The square root of 2821885 is about 1679.8467191979. The cubic root of 2821885 is about 141.3122366507.

The spelling of 2821885 in words is "two million, eight hundred twenty-one thousand, eight hundred eighty-five".