2821384 has 16 divisors (see below), whose sum is σ = 5338620. Its totient is φ = 1397760.

The previous prime is 2821369. The next prime is 2821393. The reversal of 2821384 is 4831282.

It can be written as a sum of positive squares in 2 ways, for example, as 1633284 + 1188100 = 1278^2 + 1090^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657 + ... + 2464.

2^2821384 is an apocalyptic number.

It is an amenable number.

2821384 is a deficient number, since it is larger than the sum of its proper divisors (2517236).

2821384 is a wasteful number, since it uses less digits than its factorization.

2821384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3240 (or 3236 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 2821384 is about 1679.6975918301. The cubic root of 2821384 is about 141.3038732552.

It can be divided in two parts, 28 and 21384, that added together give a palindrome (21412).

The spelling of 2821384 in words is "two million, eight hundred twenty-one thousand, three hundred eighty-four".