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12802516960 = 255271503587
BaseRepresentation
bin10111110110001011…
…01110011111100000
31020001020012020122211
423323011232133200
5202204421020320
65514214211504
7632154412222
oct137305563740
936036166584
1012802516960
11547a761532
122593653b94
1312904b922c
14896440412
154ede4355a
hex2fb16e7e0

12802516960 has 96 divisors (see below), whose sum is σ = 30469727232. Its totient is φ = 5083292160.

The previous prime is 12802516897. The next prime is 12802516999. The reversal of 12802516960 is 6961520821.

It is a super-2 number, since 2×128025169602 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21809787 + ... + 21810373.

It is an arithmetic number, because the mean of its divisors is an integer number (317392992).

Almost surely, 212802516960 is an apocalyptic number.

12802516960 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 12802516960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15234863616).

12802516960 is an abundant number, since it is smaller than the sum of its proper divisors (17667210272).

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

12802516960 is a wasteful number, since it uses less digits than its factorization.

12802516960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376 (or 1368 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The spelling of 12802516960 in words is "twelve billion, eight hundred two million, five hundred sixteen thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 271 503 542 587 1006 1084 1174 1355 2012 2168 2348 2515 2710 2935 4024 4336 4696 5030 5420 5870 8048 8672 9392 10060 10840 11740 16096 18784 20120 21680 23480 40240 43360 46960 80480 93920 136313 159077 272626 295261 318154 545252 590522 636308 681565 795385 1090504 1181044 1272616 1363130 1476305 1590770 2181008 2362088 2545232 2726260 2952610 3181540 4362016 4724176 5090464 5452520 5905220 6363080 9448352 10905040 11810440 12726160 21810080 23620880 25452320 47241760 80015731 160031462 320062924 400078655 640125848 800157310 1280251696 1600314620 2560503392 3200629240 6401258480 12802516960