21446084 has 24 divisors (see below), whose sum is σ = 41061216. Its totient is φ = 9720000.

The previous prime is 21446083. The next prime is 21446093. The reversal of 21446084 is 48064412.

It is not an unprimeable number, because it can be changed into a prime (21446081) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 26039 + ... + 26849.

It is an arithmetic number, because the mean of its divisors is an integer number (1710884).

Almost surely, 2^21446084 is an apocalyptic number.

It is an amenable number.

21446084 is a deficient number, since it is larger than the sum of its proper divisors (19615132).

21446084 is a wasteful number, since it uses less digits than its factorization.

21446084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427 (or 1425 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 21446084 is about 4630.9916864533. The cubic root of 21446084 is about 277.8322573796.

It can be divided in two parts, 2144 and 6084, that added together give a palindrome (8228).

The spelling of 21446084 in words is "twenty-one million, four hundred forty-six thousand, eighty-four".