20771083 has 4 divisors (see below), whose sum is σ = 20972848. Its totient is φ = 20569320.

The previous prime is 20771081. The next prime is 20771111. The reversal of 20771083 is 38017702.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20771083 - 2¹ = 20771081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20771081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100728 + ... + 100933.

It is an arithmetic number, because the mean of its divisors is an integer number (5243212).

Almost surely, 2^20771083 is an apocalyptic number.

20771083 is a deficient number, since it is larger than the sum of its proper divisors (201765).

20771083 is a wasteful number, since it uses less digits than its factorization.

20771083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201764.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 20771083 is about 4557.5303619395. The cubic root of 20771083 is about 274.8862692247.

Adding to 20771083 its reverse (38017702), we get a palindrome (58788785).

It can be divided in two parts, 2077 and 1083, that added together give a triangular number (3160 = T₇₉).

The spelling of 20771083 in words is "twenty million, seven hundred seventy-one thousand, eighty-three".