Search a number
-
+
12971148 = 2231956891
BaseRepresentation
bin110001011110…
…110010001100
3220102000001220
4301132302030
511310034043
61142003340
7215152521
oct61366214
926360056
1012971148
11735a463
124416550
1328c2048
141a19148
151213483
hexc5ec8c

12971148 has 24 divisors (see below), whose sum is σ = 31859520. Its totient is φ = 4096080.

The previous prime is 12971143. The next prime is 12971173. The reversal of 12971148 is 84117921.

12971148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12971141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28218 + ... + 28673.

It is an arithmetic number, because the mean of its divisors is an integer number (1327480).

Almost surely, 212971148 is an apocalyptic number.

It is an amenable number.

12971148 is an abundant number, since it is smaller than the sum of its proper divisors (18888372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12971148 is a wasteful number, since it uses less digits than its factorization.

12971148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56917 (or 56915 counting only the distinct ones).

The product of its digits is 4032, while the sum is 33.

The square root of 12971148 is about 3601.5480005131. The cubic root of 12971148 is about 234.9593893911.

The spelling of 12971148 in words is "twelve million, nine hundred seventy-one thousand, one hundred forty-eight".

Divisors: 1 2 3 4 6 12 19 38 57 76 114 228 56891 113782 170673 227564 341346 682692 1080929 2161858 3242787 4323716 6485574 12971148