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12910380 = 2235759521
BaseRepresentation
bin110001001111…
…111100101100
3220021220201020
4301033330230
511301113010
61140414140
7214510410
oct61177454
926256636
1012910380
11731883a
1243a7350
1328a04a2
141a00d40
151200470
hexc4ff2c

12910380 has 96 divisors (see below), whose sum is σ = 42094080. Its totient is φ = 2895360.

The previous prime is 12910379. The next prime is 12910397. The reversal of 12910380 is 8301921.

It is a self number, because there is not a number n which added to its sum of digits gives 12910380.

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, 24520 + ... + 25040.

It is an arithmetic number, because the mean of its divisors is an integer number (438480).

Almost surely, 212910380 is an apocalyptic number.

12910380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12910380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21047040).

12910380 is an abundant number, since it is smaller than the sum of its proper divisors (29183700).

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

12910380 is a wasteful number, since it uses less digits than its factorization.

12910380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 12910380 is about 3593.1017241375. The cubic root of 12910380 is about 234.5918977033.

The spelling of 12910380 in words is "twelve million, nine hundred ten thousand, three hundred eighty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 59 60 70 84 105 118 140 177 210 236 295 354 413 420 521 590 708 826 885 1042 1180 1239 1563 1652 1770 2065 2084 2478 2605 3126 3540 3647 4130 4956 5210 6195 6252 7294 7815 8260 10420 10941 12390 14588 15630 18235 21882 24780 30739 31260 36470 43764 54705 61478 72940 92217 109410 122956 153695 184434 215173 218820 307390 368868 430346 461085 614780 645519 860692 922170 1075865 1291038 1844340 2151730 2582076 3227595 4303460 6455190 12910380