20682871 has 16 divisors (see below), whose sum is σ = 23443200. Its totient is φ = 18083520.

The previous prime is 20682869. The next prime is 20682877. The reversal of 20682871 is 17828602.

It is a cyclic number.

It is not a de Polignac number, because 20682871 - 2¹ = 20682869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20682877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34230 + ... + 34828.

It is an arithmetic number, because the mean of its divisors is an integer number (1465200).

Almost surely, 2^20682871 is an apocalyptic number.

20682871 is a deficient number, since it is larger than the sum of its proper divisors (2760329).

20682871 is a wasteful number, since it uses less digits than its factorization.

20682871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726.

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

The square root of 20682871 is about 4547.8424554947. The cubic root of 20682871 is about 274.4965820303.

The spelling of 20682871 in words is "twenty million, six hundred eighty-two thousand, eight hundred seventy-one".