20771043 has 4 divisors (see below), whose sum is σ = 27694728. Its totient is φ = 13847360.

The previous prime is 20771041. The next prime is 20771057. The reversal of 20771043 is 34017702.

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 20771043 - 2¹ = 20771041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20771041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3461838 + ... + 3461843.

It is an arithmetic number, because the mean of its divisors is an integer number (6923682).

Almost surely, 2^20771043 is an apocalyptic number.

20771043 is a deficient number, since it is larger than the sum of its proper divisors (6923685).

20771043 is an equidigital number, since it uses as much as digits as its factorization.

20771043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6923684.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 20771043 is about 4557.5259735958. The cubic root of 20771043 is about 274.8860927701.

Adding to 20771043 its reverse (34017702), we get a palindrome (54788745).

The spelling of 20771043 in words is "twenty million, seven hundred seventy-one thousand, forty-three".