20682718 has 8 divisors (see below), whose sum is σ = 35456112. Its totient is φ = 8864016.

The previous prime is 20682677. The next prime is 20682719. The reversal of 20682718 is 81728602.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20682719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 738655 + ... + 738682.

It is an arithmetic number, because the mean of its divisors is an integer number (4432014).

Almost surely, 2^20682718 is an apocalyptic number.

20682718 is a deficient number, since it is larger than the sum of its proper divisors (14773394).

20682718 is a wasteful number, since it uses less digits than its factorization.

20682718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477346.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 20682718 is about 4547.8256343004. The cubic root of 20682718 is about 274.4959051726.

The spelling of 20682718 in words is "twenty million, six hundred eighty-two thousand, seven hundred eighteen".