20071873 has 2 divisors, whose sum is σ = 20071874. Its totient is φ = 20071872.

The previous prime is 20071829. The next prime is 20071901. The reversal of 20071873 is 37817002.

It is a happy number.

It is an a-pointer prime, because the next prime (20071901) can be obtained adding 20071873 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19210689 + 861184 = 4383^2 + 928^2 .

It is a cyclic number.

It is not a de Polignac number, because 20071873 - 2⁹ = 20071361 is a prime.

It is not a weakly prime, because it can be changed into another prime (20071813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10035936 + 10035937.

It is an arithmetic number, because the mean of its divisors is an integer number (10035937).

Almost surely, 2^20071873 is an apocalyptic number.

It is an amenable number.

20071873 is a deficient number, since it is larger than the sum of its proper divisors (1).

20071873 is an equidigital number, since it uses as much as digits as its factorization.

20071873 is an evil number, because the sum of its binary digits is even.

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

The square root of 20071873 is about 4480.1643943052. The cubic root of 20071873 is about 271.7665284991.

Adding to 20071873 its reverse (37817002), we get a palindrome (57888875).

The spelling of 20071873 in words is "twenty million, seventy-one thousand, eight hundred seventy-three".