Search a number
-
+
47131205 = 5114791789
BaseRepresentation
bin1011001111001…
…0101001000101
310021200111212012
42303302221011
544031144310
64402104005
71111415522
oct263625105
9107614765
1047131205
1124671410
121394b005
1399c26b4
14638c149
15420ec05
hex2cf2a45

47131205 has 16 divisors (see below), whose sum is σ = 61862400. Its totient is φ = 34186560.

The previous prime is 47131199. The next prime is 47131207. The reversal of 47131205 is 50213174.

47131205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47131205 - 212 = 47127109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47131207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25451 + ... + 27239.

It is an arithmetic number, because the mean of its divisors is an integer number (3866400).

Almost surely, 247131205 is an apocalyptic number.

It is an amenable number.

47131205 is a deficient number, since it is larger than the sum of its proper divisors (14731195).

47131205 is a wasteful number, since it uses less digits than its factorization.

47131205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2284.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 47131205 is about 6865.2170395407. The cubic root of 47131205 is about 361.2181087974.

Adding to 47131205 its reverse (50213174), we get a palindrome (97344379).

The spelling of 47131205 in words is "forty-seven million, one hundred thirty-one thousand, two hundred five".

Divisors: 1 5 11 55 479 1789 2395 5269 8945 19679 26345 98395 856931 4284655 9426241 47131205