21334486 has 8 divisors (see below), whose sum is σ = 32387544. Its totient is φ = 10538640.

The previous prime is 21334463. The next prime is 21334487. The reversal of 21334486 is 68443312.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21334487) 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, 64095 + ... + 64426.

It is an arithmetic number, because the mean of its divisors is an integer number (4048443).

Almost surely, 2^21334486 is an apocalyptic number.

21334486 is a deficient number, since it is larger than the sum of its proper divisors (11053058).

21334486 is a wasteful number, since it uses less digits than its factorization.

21334486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128606.

The product of its digits is 13824, while the sum is 31.

The square root of 21334486 is about 4618.9269316585. The cubic root of 21334486 is about 277.3495047405.

Adding to 21334486 its reverse (68443312), we get a palindrome (89777798).

The spelling of 21334486 in words is "twenty-one million, three hundred thirty-four thousand, four hundred eighty-six".