20841682 has 8 divisors (see below), whose sum is σ = 31333500. Its totient is φ = 10397184.

The previous prime is 20841679. The next prime is 20841683. The reversal of 20841682 is 28614802.

It can be written as a sum of positive squares in 2 ways, for example, as 20151121 + 690561 = 4489^2 + 831^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20841683) by changing a digit.

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, 10707 + ... + 12502.

Almost surely, 2^20841682 is an apocalyptic number.

20841682 is a deficient number, since it is larger than the sum of its proper divisors (10491818).

20841682 is a wasteful number, since it uses less digits than its factorization.

20841682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23660.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 20841682 is about 4565.2691048831. The cubic root of 20841682 is about 275.1973547525.

The spelling of 20841682 in words is "twenty million, eight hundred forty-one thousand, six hundred eighty-two".