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20123270160 = 2435711978137
BaseRepresentation
bin10010101111011100…
…001011110000010000
31220221102111001010020
4102233130023300100
5312203024121120
613124451303440
71311446655060
oct225734136020
956842431106
1020123270160
118597074794
123a972aab80
131b890a8166
14d8c8133a0
157cb9ba640
hex4af70bc10

20123270160 has 80 divisors (see below), whose sum is σ = 71293877376. Its totient is φ = 4599604224.

The previous prime is 20123270117. The next prime is 20123270173. The reversal of 20123270160 is 6107232102.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 20123270160.

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, 5987389 + ... + 5990748.

Almost surely, 220123270160 is an apocalyptic number.

20123270160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20123270160 is an abundant number, since it is smaller than the sum of its proper divisors (51170607216).

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

20123270160 is a wasteful number, since it uses less digits than its factorization.

20123270160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11978160 (or 11978154 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The spelling of 20123270160 in words is "twenty billion, one hundred twenty-three million, two hundred seventy thousand, one hundred sixty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 35 40 42 48 56 60 70 80 84 105 112 120 140 168 210 240 280 336 420 560 840 1680 11978137 23956274 35934411 47912548 59890685 71868822 83846959 95825096 119781370 143737644 167693918 179672055 191650192 239562740 251540877 287475288 335387836 359344110 419234795 479125480 503081754 574950576 670775672 718688220 838469590 958250960 1006163508 1257704385 1341551344 1437376440 1676939180 2012327016 2515408770 2874752880 3353878360 4024654032 5030817540 6707756720 10061635080 20123270160