21044334 has 32 divisors (see below), whose sum is σ = 44837280. Its totient is φ = 6561792.

The previous prime is 21044311. The next prime is 21044341. The reversal of 21044334 is 43344012.

It is a super-3 number, since 3×21044334³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21044334.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19152 + ... + 20220.

It is an arithmetic number, because the mean of its divisors is an integer number (1401165).

Almost surely, 2^21044334 is an apocalyptic number.

21044334 is an abundant number, since it is smaller than the sum of its proper divisors (23792946).

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

21044334 is a wasteful number, since it uses less digits than its factorization.

21044334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 21044334 is about 4587.4103805960. The cubic root of 21044334 is about 276.0864306080.

Adding to 21044334 its reverse (43344012), we get a palindrome (64388346).

It can be divided in two parts, 210 and 44334, that added together give a palindrome (44544).

The spelling of 21044334 in words is "twenty-one million, forty-four thousand, three hundred thirty-four".