Search a number
-
+
12871960 = 235321799
BaseRepresentation
bin110001000110…
…100100011000
3220012222000021
4301012210120
511243400320
61135520224
7214260403
oct61064430
926188007
1012871960
1172a1992
124389074
132888b5a
1419d0d3a
1511e3daa
hexc46918

12871960 has 16 divisors (see below), whose sum is σ = 28962000. Its totient is φ = 5148768.

The previous prime is 12871933. The next prime is 12872003. The reversal of 12871960 is 6917821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160860 + ... + 160939.

It is an arithmetic number, because the mean of its divisors is an integer number (1810125).

Almost surely, 212871960 is an apocalyptic number.

12871960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12871960 is an abundant number, since it is smaller than the sum of its proper divisors (16090040).

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

12871960 is a wasteful number, since it uses less digits than its factorization.

12871960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321810 (or 321806 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 12871960 is about 3587.7513849206. The cubic root of 12871960 is about 234.3589591392.

It can be divided in two parts, 12871 and 960, that added together give a palindrome (13831).

The spelling of 12871960 in words is "twelve million, eight hundred seventy-one thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 321799 643598 1287196 1608995 2574392 3217990 6435980 12871960