20071071 has 24 divisors (see below), whose sum is σ = 30319744. Its totient is φ = 13267800.

The previous prime is 20071039. The next prime is 20071097. The reversal of 20071071 is 17017002.

It is not a de Polignac number, because 20071071 - 2⁵ = 20071039 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 (20072071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36420 + ... + 36966.

Almost surely, 2^20071071 is an apocalyptic number.

20071071 is a deficient number, since it is larger than the sum of its proper divisors (10248673).

20071071 is an equidigital number, since it uses as much as digits as its factorization.

20071071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713 (or 701 counting only the distinct ones).

The product of its (nonzero) digits is 98, while the sum is 18.

The square root of 20071071 is about 4480.0748877669. The cubic root of 20071071 is about 271.7629088459.

Adding to 20071071 its reverse (17017002), we get a palindrome (37088073).

The spelling of 20071071 in words is "twenty million, seventy-one thousand, seventy-one".