21824482 has 4 divisors (see below), whose sum is σ = 32736726. Its totient is φ = 10912240.

The previous prime is 21824479. The next prime is 21824503. The reversal of 21824482 is 28442812.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21818241 + 6241 = 4671^2 + 79^2 .

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 as a sum of consecutive naturals, namely, 5456119 + ... + 5456122.

Almost surely, 2^21824482 is an apocalyptic number.

21824482 is a deficient number, since it is larger than the sum of its proper divisors (10912244).

21824482 is a wasteful number, since it uses less digits than its factorization.

21824482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10912243.

The product of its digits is 8192, while the sum is 31.

The square root of 21824482 is about 4671.6680104648. The cubic root of 21824482 is about 279.4567784225.

The spelling of 21824482 in words is "twenty-one million, eight hundred twenty-four thousand, four hundred eighty-two".