2284784821 has 16 divisors (see below), whose sum is σ = 2547986688. Its totient is φ = 2030918400.

The previous prime is 2284784797. The next prime is 2284784837. The reversal of 2284784821 is 1284874822.

It is a cyclic number.

It is not a de Polignac number, because 2284784821 - 2⁷ = 2284784693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2284784881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 905041 + ... + 907561.

It is an arithmetic number, because the mean of its divisors is an integer number (159249168).

Almost surely, 2^2284784821 is an apocalyptic number.

It is an amenable number.

2284784821 is a deficient number, since it is larger than the sum of its proper divisors (263201867).

2284784821 is a wasteful number, since it uses less digits than its factorization.

2284784821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4332.

The product of its digits is 458752, while the sum is 46.

The square root of 2284784821 is about 47799.4228103227. The cubic root of 2284784821 is about 1317.0889362320.

Subtracting from 2284784821 its reverse (1284874822), we obtain a palindrome (999909999).

The spelling of 2284784821 in words is "two billion, two hundred eighty-four million, seven hundred eighty-four thousand, eight hundred twenty-one".