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12880230 = 23511231697
BaseRepresentation
bin110001001000…
…100101100110
3220020101100120
4301020211212
511244131410
61140022410
7214323456
oct61104546
926211316
1012880230
1172a8120
124391a06
13288c84c
1419d3d66
1511e6570
hexc48966

12880230 has 64 divisors (see below), whose sum is σ = 35209728. Its totient is φ = 2984960.

The previous prime is 12880201. The next prime is 12880247. The reversal of 12880230 is 3208821.

12880230 = T30 + T31 + ... + T425.

It is a self number, because there is not a number n which added to its sum of digits gives 12880230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6742 + ... + 8438.

It is an arithmetic number, because the mean of its divisors is an integer number (550152).

Almost surely, 212880230 is an apocalyptic number.

12880230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12880230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17604864).

12880230 is an abundant number, since it is smaller than the sum of its proper divisors (22329498).

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

12880230 is a wasteful number, since it uses less digits than its factorization.

12880230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1741.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 12880230 is about 3588.9037323394. The cubic root of 12880230 is about 234.4091388493.

The spelling of 12880230 in words is "twelve million, eight hundred eighty thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 11 15 22 23 30 33 46 55 66 69 110 115 138 165 230 253 330 345 506 690 759 1265 1518 1697 2530 3394 3795 5091 7590 8485 10182 16970 18667 25455 37334 39031 50910 56001 78062 93335 112002 117093 186670 195155 234186 280005 390310 429341 560010 585465 858682 1170930 1288023 2146705 2576046 4293410 6440115 12880230