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12880947360 = 253573936313
BaseRepresentation
bin10111111111100001…
…11010100010100000
31020020200202220221110
423333300322202200
5202340010303420
65530055223320
7634126150251
oct137760724240
936220686843
1012880947360
11550aa60446
1225b5977b40
1312a381a058
148a2a18b28
15505c86ee0
hex2ffc3a8a0

12880947360 has 96 divisors (see below), whose sum is σ = 40631008320. Its totient is φ = 3430176768.

The previous prime is 12880947271. The next prime is 12880947367. The reversal of 12880947360 is 6374908821.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (12880947367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 336564 + ... + 372876.

It is an arithmetic number, because the mean of its divisors is an integer number (423239670).

Almost surely, 212880947360 is an apocalyptic number.

12880947360 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 12880947360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20315504160).

12880947360 is an abundant number, since it is smaller than the sum of its proper divisors (27750060960).

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

12880947360 is a wasteful number, since it uses less digits than its factorization.

12880947360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37070 (or 37062 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 12880947360 in words is "twelve billion, eight hundred eighty million, nine hundred forty-seven thousand, three hundred sixty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 80 96 120 160 240 480 739 1478 2217 2956 3695 4434 5912 7390 8868 11085 11824 14780 17736 22170 23648 29560 35472 36313 44340 59120 70944 72626 88680 108939 118240 145252 177360 181565 217878 290504 354720 363130 435756 544695 581008 726260 871512 1089390 1162016 1452520 1743024 2178780 2905040 3486048 4357560 5810080 8715120 17430240 26835307 53670614 80505921 107341228 134176535 161011842 214682456 268353070 322023684 402529605 429364912 536706140 644047368 805059210 858729824 1073412280 1288094736 1610118420 2146824560 2576189472 3220236840 4293649120 6440473680 12880947360