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20754286321740 = 22351564932210353
BaseRepresentation
bin1001011100000001110111…
…10111010010000001001100
32201111002102220020210001120
410232000323313102001030
510210014234244243430
6112050215411440540
74241306363664666
oct456007367220114
981432386223046
1020754286321740
116681930624744
1223b23a05b6150
13b7717553103a
1451a727259536
1525eceec64610
hex12e03bdd204c

20754286321740 has 48 divisors (see below), whose sum is σ = 58112399331168. Its totient is φ = 5534438482944.

The previous prime is 20754286321679. The next prime is 20754286321753. The reversal of 20754286321740 is 4712368245702.

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, 8284404 + ... + 10494756.

It is an arithmetic number, because the mean of its divisors is an integer number (1210674986066).

Almost surely, 220754286321740 is an apocalyptic number.

20754286321740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20754286321740 is an abundant number, since it is smaller than the sum of its proper divisors (37358113009428).

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

20754286321740 is a wasteful number, since it uses less digits than its factorization.

20754286321740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2366858 (or 2366856 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 51.

The spelling of 20754286321740 in words is "twenty trillion, seven hundred fifty-four billion, two hundred eighty-six million, three hundred twenty-one thousand, seven hundred forty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 156493 312986 469479 625972 782465 938958 1564930 1877916 2210353 2347395 3129860 4420706 4694790 6631059 8841412 9389580 11051765 13262118 22103530 26524236 33155295 44207060 66310590 132621180 345904772029 691809544058 1037714316087 1383619088116 1729523860145 2075428632174 3459047720290 4150857264348 5188571580435 6918095440580 10377143160870 20754286321740