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12756020620 = 2257293141877
BaseRepresentation
bin10111110000101000…
…10110110110001100
31012220222200222200011
423320110112312030
5202111020124440
65505433443004
7631051246330
oct137024266614
935828628604
1012756020620
115456494102
12257bb70464
1312839897c5
148901b97c0
154e9d0b9ea
hex2f8516d8c

12756020620 has 48 divisors (see below), whose sum is σ = 31670130240. Its totient is φ = 4222681344.

The previous prime is 12756020617. The next prime is 12756020653. The reversal of 12756020620 is 2602065721.

12756020620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1566879 + ... + 1574998.

It is an arithmetic number, because the mean of its divisors is an integer number (659794380).

Almost surely, 212756020620 is an apocalyptic number.

12756020620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12756020620 is an abundant number, since it is smaller than the sum of its proper divisors (18914109620).

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

12756020620 is a wasteful number, since it uses less digits than its factorization.

12756020620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3141922 (or 3141920 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 12756020620 in words is "twelve billion, seven hundred fifty-six million, twenty thousand, six hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 29 35 58 70 116 140 145 203 290 406 580 812 1015 2030 4060 3141877 6283754 12567508 15709385 21993139 31418770 43986278 62837540 87972556 91114433 109965695 182228866 219931390 364457732 439862780 455572165 637801031 911144330 1275602062 1822288660 2551204124 3189005155 6378010310 12756020620