21441484 has 12 divisors (see below), whose sum is σ = 37573200. Its totient is φ = 10706288.

The previous prime is 21441467. The next prime is 21441493. The reversal of 21441484 is 48414412.

It is a super-2 number, since 2×21441484² = 919474472244512, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162 + ... + 6550.

It is an arithmetic number, because the mean of its divisors is an integer number (3131100).

Almost surely, 2^21441484 is an apocalyptic number.

It is an amenable number.

21441484 is a deficient number, since it is larger than the sum of its proper divisors (16131716).

21441484 is a wasteful number, since it uses less digits than its factorization.

21441484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7232 (or 7230 counting only the distinct ones).

The product of its digits is 4096, while the sum is 28.

The square root of 21441484 is about 4630.4950059362. The cubic root of 21441484 is about 277.8123917517.

Adding to 21441484 its reverse (48414412), we get a palindrome (69855896).

The spelling of 21441484 in words is "twenty-one million, four hundred forty-one thousand, four hundred eighty-four".