20682983 has 8 divisors (see below), whose sum is σ = 21872256. Its totient is φ = 19526400.

The previous prime is 20682979. The next prime is 20682989. The reversal of 20682983 is 38928602.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20682983 - 2² = 20682979 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20682989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6866 + ... + 9407.

It is an arithmetic number, because the mean of its divisors is an integer number (2734032).

Almost surely, 2^20682983 is an apocalyptic number.

20682983 is a deficient number, since it is larger than the sum of its proper divisors (1189273).

20682983 is a wasteful number, since it uses less digits than its factorization.

20682983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16345.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 20682983 is about 4547.8547690092. The cubic root of 20682983 is about 274.4970775057.

The spelling of 20682983 in words is "twenty million, six hundred eighty-two thousand, nine hundred eighty-three".