21182882 has 16 divisors (see below), whose sum is σ = 36372672. Its totient is φ = 9063600.

The previous prime is 21182869. The next prime is 21182893. The reversal of 21182882 is 28828112.

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 7 ways as a sum of consecutive naturals, for example, 15632 + ... + 16932.

It is an arithmetic number, because the mean of its divisors is an integer number (2273292).

Almost surely, 2^21182882 is an apocalyptic number.

21182882 is a deficient number, since it is larger than the sum of its proper divisors (15189790).

21182882 is a wasteful number, since it uses less digits than its factorization.

21182882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2473.

The product of its digits is 4096, while the sum is 32.

The square root of 21182882 is about 4602.4865018813. The cubic root of 21182882 is about 276.6909889748.

The spelling of 21182882 in words is "twenty-one million, one hundred eighty-two thousand, eight hundred eighty-two".