2821818 has 8 divisors (see below), whose sum is σ = 5643648. Its totient is φ = 940604.

The previous prime is 2821817. The next prime is 2821829. The reversal of 2821818 is 8181282.

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

2821818 is an admirable number.

2821818 is a modest number, since divided by 1818 gives 282 as remainder.

It is not an unprimeable number, because it can be changed into a prime (2821811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235146 + ... + 235157.

It is an arithmetic number, because the mean of its divisors is an integer number (705456).

2^2821818 is an apocalyptic number.

2821818 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2821818 is a wasteful number, since it uses less digits than its factorization.

2821818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470308.

The product of its digits is 2048, while the sum is 30.

The square root of 2821818 is about 1679.8267767838. The cubic root of 2821818 is about 141.3111182500.

The spelling of 2821818 in words is "two million, eight hundred twenty-one thousand, eight hundred eighteen".