21434334 has 8 divisors (see below), whose sum is σ = 42868680. Its totient is φ = 7144776.

The previous prime is 21434327. The next prime is 21434341. The reversal of 21434334 is 43343412.

It is an interprime number because it is at equal distance from previous prime (21434327) and next prime (21434341).

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

21434334 is an admirable number.

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, 1786189 + ... + 1786200.

It is an arithmetic number, because the mean of its divisors is an integer number (5358585).

Almost surely, 2^21434334 is an apocalyptic number.

21434334 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21434334 is a wasteful number, since it uses less digits than its factorization.

21434334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3572394.

The product of its digits is 3456, while the sum is 24.

The square root of 21434334 is about 4629.7228858756. The cubic root of 21434334 is about 277.7815080151.

Adding to 21434334 its reverse (43343412), we get a palindrome (64777746).

The spelling of 21434334 in words is "twenty-one million, four hundred thirty-four thousand, three hundred thirty-four".