21318848 has 14 divisors (see below), whose sum is σ = 42304716. Its totient is φ = 10659392.

The previous prime is 21318839. The next prime is 21318859. The reversal of 21318848 is 84881312.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166490 + ... + 166617.

Almost surely, 2^21318848 is an apocalyptic number.

It is an amenable number.

21318848 is a deficient number, since it is larger than the sum of its proper divisors (20985868).

21318848 is an equidigital number, since it uses as much as digits as its factorization.

21318848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333119 (or 333109 counting only the distinct ones).

The product of its digits is 12288, while the sum is 35.

The square root of 21318848 is about 4617.2338039133. The cubic root of 21318848 is about 277.2817232201.

The spelling of 21318848 in words is "twenty-one million, three hundred eighteen thousand, eight hundred forty-eight".