21234326 has 8 divisors (see below), whose sum is σ = 33725160. Its totient is φ = 9992608.

The previous prime is 21234307. The next prime is 21234347. The reversal of 21234326 is 62343212.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312236 + ... + 312303.

It is an arithmetic number, because the mean of its divisors is an integer number (4215645).

Almost surely, 2^21234326 is an apocalyptic number.

21234326 is a deficient number, since it is larger than the sum of its proper divisors (12490834).

21234326 is a wasteful number, since it uses less digits than its factorization.

21234326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624558.

The product of its digits is 1728, while the sum is 23.

The square root of 21234326 is about 4608.0718310374. The cubic root of 21234326 is about 276.9147952216.

Adding to 21234326 its reverse (62343212), we get a palindrome (83577538).

The spelling of 21234326 in words is "twenty-one million, two hundred thirty-four thousand, three hundred twenty-six".