21327382 has 8 divisors (see below), whose sum is σ = 32087016. Its totient is φ = 10631712.

The previous prime is 21327353. The next prime is 21327389. The reversal of 21327382 is 28372312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21327382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21327389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15148 + ... + 16495.

It is an arithmetic number, because the mean of its divisors is an integer number (4010877).

Almost surely, 2^21327382 is an apocalyptic number.

21327382 is a deficient number, since it is larger than the sum of its proper divisors (10759634).

21327382 is a wasteful number, since it uses less digits than its factorization.

21327382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31982.

The product of its digits is 4032, while the sum is 28.

The square root of 21327382 is about 4618.1578578477. The cubic root of 21327382 is about 277.3187171913.

Adding to 21327382 its reverse (28372312), we get a palindrome (49699694).

The spelling of 21327382 in words is "twenty-one million, three hundred twenty-seven thousand, three hundred eighty-two".