21482244 has 36 divisors (see below), whose sum is σ = 62060544. Its totient is φ = 6137712.

The previous prime is 21482239. The next prime is 21482267. The reversal of 21482244 is 44228412.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×21482244² = 922973614551072, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 42372 + ... + 42875.

It is an arithmetic number, because the mean of its divisors is an integer number (1723904).

Almost surely, 2^21482244 is an apocalyptic number.

It is an amenable number.

21482244 is an abundant number, since it is smaller than the sum of its proper divisors (40578300).

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

21482244 is a wasteful number, since it uses less digits than its factorization.

21482244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85264 (or 85259 counting only the distinct ones).

The product of its digits is 4096, while the sum is 27.

The square root of 21482244 is about 4634.8941735492. The cubic root of 21482244 is about 277.9883196445.

The spelling of 21482244 in words is "twenty-one million, four hundred eighty-two thousand, two hundred forty-four".