21084848 has 20 divisors (see below), whose sum is σ = 41154360. Its totient is φ = 10464384.

The previous prime is 21084839. The next prime is 21084853. The reversal of 21084848 is 84848012.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2618 + ... + 7001.

It is an arithmetic number, because the mean of its divisors is an integer number (2057718).

Almost surely, 2^21084848 is an apocalyptic number.

It is an amenable number.

21084848 is a deficient number, since it is larger than the sum of its proper divisors (20069512).

21084848 is a wasteful number, since it uses less digits than its factorization.

21084848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9764 (or 9758 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 35.

The square root of 21084848 is about 4591.8240384405. The cubic root of 21084848 is about 276.2634884864.

It can be divided in two parts, 210 and 84848, that added together give a palindrome (85058).

The spelling of 21084848 in words is "twenty-one million, eighty-four thousand, eight hundred forty-eight".