2821518 has 48 divisors (see below), whose sum is σ = 7144800. Its totient is φ = 804384.

The previous prime is 2821517. The next prime is 2821537. The reversal of 2821518 is 8151282.

2821518 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2821491 and 2821500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2821513) 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 23 ways as a sum of consecutive naturals, for example, 5946 + ... + 6402.

It is an arithmetic number, because the mean of its divisors is an integer number (148850).

2^2821518 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2821518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3572400).

2821518 is an abundant number, since it is smaller than the sum of its proper divisors (4323282).

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

2821518 is a wasteful number, since it uses less digits than its factorization.

2821518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486 (or 469 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 2821518 is about 1679.7374794890. The cubic root of 2821518 is about 141.3061102684.

The spelling of 2821518 in words is "two million, eight hundred twenty-one thousand, five hundred eighteen".