Search a number
-
+
20047873 = 89225257
BaseRepresentation
bin100110001111…
…0100000000001
31101201112111211
41030132200001
520113012443
61553410121
7332255416
oct114364001
941645454
1020047873
111035329a
126869941
1341cc161
14293c10d
151b6019d
hex131e801

20047873 has 4 divisors (see below), whose sum is σ = 20273220. Its totient is φ = 19822528.

The previous prime is 20047871. The next prime is 20047889. The reversal of 20047873 is 37874002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2214144 + 17833729 = 1488^2 + 4223^2 .

It is a cyclic number.

It is not a de Polignac number, because 20047873 - 21 = 20047871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20047871) 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, 112540 + ... + 112717.

It is an arithmetic number, because the mean of its divisors is an integer number (5068305).

Almost surely, 220047873 is an apocalyptic number.

It is an amenable number.

20047873 is a deficient number, since it is larger than the sum of its proper divisors (225347).

20047873 is an equidigital number, since it uses as much as digits as its factorization.

20047873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225346.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 20047873 is about 4477.4851200199. The cubic root of 20047873 is about 271.6581679419.

The spelling of 20047873 in words is "twenty million, forty-seven thousand, eight hundred seventy-three".

Divisors: 1 89 225257 20047873