2821347 has 12 divisors (see below), whose sum is σ = 4108104. Its totient is φ = 1865760.

The previous prime is 2821331. The next prime is 2821369. The reversal of 2821347 is 7431282.

2821347 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2821347 - 2⁴ = 2821331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2821347.

It is not an unprimeable number, because it can be changed into a prime (2820347) 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 11 ways as a sum of consecutive naturals, for example, 18 + ... + 2375.

It is an arithmetic number, because the mean of its divisors is an integer number (342342).

2^2821347 is an apocalyptic number.

2821347 is a deficient number, since it is larger than the sum of its proper divisors (1286757).

2821347 is a wasteful number, since it uses less digits than its factorization.

2821347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2530 (or 2527 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 2821347 is about 1679.6865779067. The cubic root of 2821347 is about 141.3032555600.

The spelling of 2821347 in words is "two million, eight hundred twenty-one thousand, three hundred forty-seven".