21444114 has 16 divisors (see below), whose sum is σ = 43174080. Its totient is φ = 7100400.

The previous prime is 21444113. The next prime is 21444121. The reversal of 21444114 is 41144412.

It is not an unprimeable number, because it can be changed into a prime (21444113) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10929 + ... + 12740.

It is an arithmetic number, because the mean of its divisors is an integer number (2698380).

Almost surely, 2^21444114 is an apocalyptic number.

21444114 is an abundant number, since it is smaller than the sum of its proper divisors (21729966).

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

21444114 is a wasteful number, since it uses less digits than its factorization.

21444114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23825.

The product of its digits is 512, while the sum is 21.

The square root of 21444114 is about 4630.7789841451. The cubic root of 21444114 is about 277.8237500563.

Adding to 21444114 its reverse (41144412), we get a palindrome (62588526).

The spelling of 21444114 in words is "twenty-one million, four hundred forty-four thousand, one hundred fourteen".