21339082 has 8 divisors (see below), whose sum is σ = 32127552. Its totient is φ = 10629900.

The previous prime is 21339077. The next prime is 21339083. The reversal of 21339082 is 28093312.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21339082.

It is not an unprimeable number, because it can be changed into a prime (21339083) 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 3 ways as a sum of consecutive naturals, for example, 19144 + ... + 20227.

It is an arithmetic number, because the mean of its divisors is an integer number (4015944).

Almost surely, 2^21339082 is an apocalyptic number.

21339082 is a deficient number, since it is larger than the sum of its proper divisors (10788470).

21339082 is a wasteful number, since it uses less digits than its factorization.

21339082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39644.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 21339082 is about 4619.4244230207. The cubic root of 21339082 is about 277.3694193957.

The spelling of 21339082 in words is "twenty-one million, three hundred thirty-nine thousand, eighty-two".