21449482 has 8 divisors (see below), whose sum is σ = 32308452. Its totient is φ = 10680000.

The previous prime is 21449453. The next prime is 21449503. The reversal of 21449482 is 28494412.

It can be written as a sum of positive squares in 2 ways, for example, as 20711601 + 737881 = 4551^2 + 859^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 21769 + ... + 22732.

Almost surely, 2^21449482 is an apocalyptic number.

21449482 is a deficient number, since it is larger than the sum of its proper divisors (10858970).

21449482 is a wasteful number, since it uses less digits than its factorization.

21449482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44744.

The product of its digits is 18432, while the sum is 34.

The square root of 21449482 is about 4631.3585479857. The cubic root of 21449482 is about 277.8469302083.

The spelling of 21449482 in words is "twenty-one million, four hundred forty-nine thousand, four hundred eighty-two".