20771682 has 16 divisors (see below), whose sum is σ = 41591232. Its totient is φ = 6915920.

The previous prime is 20771657. The next prime is 20771683. The reversal of 20771682 is 28617702.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (20771683) 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, 6307 + ... + 9017.

It is an arithmetic number, because the mean of its divisors is an integer number (2599452).

Almost surely, 2^20771682 is an apocalyptic number.

20771682 is an abundant number, since it is smaller than the sum of its proper divisors (20819550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20771682 is a wasteful number, since it uses less digits than its factorization.

20771682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3993.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 20771682 is about 4557.5960768809. The cubic root of 20771682 is about 274.8889116048. Note that the first 3 decimals are identical.

The spelling of 20771682 in words is "twenty million, seven hundred seventy-one thousand, six hundred eighty-two".