20473873 has 4 divisors (see below), whose sum is σ = 23398720. Its totient is φ = 17549028.

The previous prime is 20473867. The next prime is 20473879. The reversal of 20473873 is 37837402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (20473867) and next prime (20473879).

It is not a de Polignac number, because 20473873 - 2¹⁷ = 20342801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20473879) 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, 1462413 + ... + 1462426.

It is an arithmetic number, because the mean of its divisors is an integer number (5849680).

Almost surely, 2^20473873 is an apocalyptic number.

It is an amenable number.

20473873 is a deficient number, since it is larger than the sum of its proper divisors (2924847).

20473873 is an equidigital number, since it uses as much as digits as its factorization.

20473873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2924846.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 20473873 is about 4524.8064046984. The cubic root of 20473873 is about 273.5688648339.

The spelling of 20473873 in words is "twenty million, four hundred seventy-three thousand, eight hundred seventy-three".