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12731996070 = 2335182325867
BaseRepresentation
bin10111101101110001…
…01101011110100110
31012212022111102012000
423312320231132212
5202033342333240
65503214510130
7630340116033
oct136670553646
935768442160
1012731996070
115443975102
122573b05346
13127b9c75b1
1488ad2438a
154e7b63430
hex2f6e2d7a6

12731996070 has 64 divisors (see below), whose sum is σ = 33971927040. Its totient is φ = 3393205344.

The previous prime is 12731996059. The next prime is 12731996093. The reversal of 12731996070 is 7069913721.

12731996070 is a `hidden beast` number, since 1 + 2 + 7 + 31 + 9 + 9 + 607 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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, 479277 + ... + 505143.

It is an arithmetic number, because the mean of its divisors is an integer number (530811360).

Almost surely, 212731996070 is an apocalyptic number.

12731996070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12731996070 is an abundant number, since it is smaller than the sum of its proper divisors (21239930970).

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

12731996070 is a wasteful number, since it uses less digits than its factorization.

12731996070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27706 (or 27700 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The spelling of 12731996070 in words is "twelve billion, seven hundred thirty-one million, nine hundred ninety-six thousand, seventy".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 90 135 270 1823 3646 5469 9115 10938 16407 18230 25867 27345 32814 49221 51734 54690 77601 82035 98442 129335 155202 164070 232803 246105 258670 388005 465606 492210 698409 776010 1164015 1396818 2328030 3492045 6984090 47155541 94311082 141466623 235777705 282933246 424399869 471555410 707333115 848799738 1273199607 1414666230 2121999345 2546399214 4243998690 6365998035 12731996070