21330262 has 8 divisors (see below), whose sum is σ = 32027256. Its totient is φ = 10654512.

The previous prime is 21330259. The next prime is 21330271. The reversal of 21330262 is 26203312.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2503 + ... + 6994.

It is an arithmetic number, because the mean of its divisors is an integer number (4003407).

Almost surely, 2^21330262 is an apocalyptic number.

21330262 is a deficient number, since it is larger than the sum of its proper divisors (10696994).

21330262 is a wasteful number, since it uses less digits than its factorization.

21330262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10622.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 21330262 is about 4618.4696599631. The cubic root of 21330262 is about 277.3311994540.

Adding to 21330262 its reverse (26203312), we get a palindrome (47533574).

The spelling of 21330262 in words is "twenty-one million, three hundred thirty thousand, two hundred sixty-two".