21310848 has 96 divisors (see below), whose sum is σ = 66087840. Its totient is φ = 6552576.

The previous prime is 21310847. The next prime is 21310871. The reversal of 21310848 is 84801312.

It is a tau number, because it is divible by the number of its divisors (96).

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21310841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14265 + ... + 15687.

It is an arithmetic number, because the mean of its divisors is an integer number (688415).

Almost surely, 2^21310848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21310848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33043920).

21310848 is an abundant number, since it is smaller than the sum of its proper divisors (44776992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21310848 is a wasteful number, since it uses less digits than its factorization.

21310848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456 (or 1441 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 21310848 is about 4616.3674030562. The cubic root of 21310848 is about 277.2470351151.

The spelling of 21310848 in words is "twenty-one million, three hundred ten thousand, eight hundred forty-eight".