21714048 has 128 divisors (see below), whose sum is σ = 65769600. Its totient is φ = 7050240.

The previous prime is 21714041. The next prime is 21714053. The reversal of 21714048 is 84041712.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (21714041) 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, 210765 + ... + 210867.

It is an arithmetic number, because the mean of its divisors is an integer number (513825).

Almost surely, 2^21714048 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 21714048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32884800).

21714048 is an abundant number, since it is smaller than the sum of its proper divisors (44055552).

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

21714048 is a wasteful number, since it uses less digits than its factorization.

21714048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 21714048 is about 4659.8334734194. The cubic root of 21714048 is about 278.9846216521.

The spelling of 21714048 in words is "twenty-one million, seven hundred fourteen thousand, forty-eight".