Search a number
-
+
12870207 = 3271761197
BaseRepresentation
bin110001000110…
…001000111111
3220012212121100
4301012020333
511243321312
61135504143
7214252320
oct61061077
926185540
1012870207
1172a0639
124388053
13288810c
1419d0447
1511e35dc
hexc4623f

12870207 has 48 divisors (see below), whose sum is σ = 22980672. Its totient is φ = 6773760.

The previous prime is 12870203. The next prime is 12870217. The reversal of 12870207 is 70207821.

12870207 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 12870207 - 22 = 12870203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12870203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65233 + ... + 65429.

It is an arithmetic number, because the mean of its divisors is an integer number (478764).

Almost surely, 212870207 is an apocalyptic number.

12870207 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12870207 is a deficient number, since it is larger than the sum of its proper divisors (10110465).

12870207 is a wasteful number, since it uses less digits than its factorization.

12870207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 12870207 is about 3587.5070731638. The cubic root of 12870207 is about 234.3483197363.

The spelling of 12870207 in words is "twelve million, eight hundred seventy thousand, two hundred seven".

Divisors: 1 3 7 9 17 21 51 61 63 119 153 183 197 357 427 549 591 1037 1071 1281 1379 1773 3111 3349 3843 4137 7259 9333 10047 12017 12411 21777 23443 30141 36051 65331 70329 84119 108153 204289 210987 252357 612867 757071 1430023 1838601 4290069 12870207