21330483 has 8 divisors (see below), whose sum is σ = 29937600. Its totient is φ = 13471848.

The previous prime is 21330481. The next prime is 21330487. The reversal of 21330483 is 38403312.

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

It is not a de Polignac number, because 21330483 - 2¹ = 21330481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21330481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187053 + ... + 187166.

It is an arithmetic number, because the mean of its divisors is an integer number (3742200).

Almost surely, 2^21330483 is an apocalyptic number.

21330483 is a deficient number, since it is larger than the sum of its proper divisors (8607117).

21330483 is a wasteful number, since it uses less digits than its factorization.

21330483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374241.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 21330483 is about 4618.4935855753. The cubic root of 21330483 is about 277.3321572479.

Adding to 21330483 its reverse (38403312), we get a palindrome (59733795).

The spelling of 21330483 in words is "twenty-one million, three hundred thirty thousand, four hundred eighty-three".