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12838670240 = 255117294699
BaseRepresentation
bin10111111010011111…
…01000111110100000
31020010202020000122012
423331033220332200
5202243144421430
65521545132052
7633103616324
oct137517507640
936122200565
1012838670240
115499104a80
1225a378a028
131297b36bc6
1489b171984
155021d5695
hex2fd3e8fa0

12838670240 has 48 divisors (see below), whose sum is σ = 33088759200. Its totient is φ = 4668606720.

The previous prime is 12838670231. The next prime is 12838670281. The reversal of 12838670240 is 4207683821.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3645590 + ... + 3649109.

It is an arithmetic number, because the mean of its divisors is an integer number (689349150).

Almost surely, 212838670240 is an apocalyptic number.

12838670240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12838670240 is an abundant number, since it is smaller than the sum of its proper divisors (20250088960).

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

12838670240 is a wasteful number, since it uses less digits than its factorization.

12838670240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7294725 (or 7294717 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 12838670240 in words is "twelve billion, eight hundred thirty-eight million, six hundred seventy thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 11 16 20 22 32 40 44 55 80 88 110 160 176 220 352 440 880 1760 7294699 14589398 29178796 36473495 58357592 72946990 80241689 116715184 145893980 160483378 233430368 291787960 320966756 401208445 583575920 641933512 802416890 1167151840 1283867024 1604833780 2567734048 3209667560 6419335120 12838670240