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1028708246220 = 2235193359247451
BaseRepresentation
bin11101111100000111100…
…10100010001011001100
310122100021110001102210120
432332003302202023030
5113323243302334340
62104325415504540
7134215230550614
oct16760362421314
93570243042716
101028708246220
113672aaa94216
12147454388150
1376011b52195
1437b0b0b9a44
151bb5bc7d4d0
hexef83ca22cc

1028708246220 has 96 divisors (see below), whose sum is σ = 2903384010240. Its totient is φ = 272139571200.

The previous prime is 1028708246219. The next prime is 1028708246221. The reversal of 1028708246220 is 226428078201.

1028708246220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1028708246219) and next prime (1028708246221).

It is not an unprimeable number, because it can be changed into a prime (1028708246221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4033495 + ... + 4280945.

It is an arithmetic number, because the mean of its divisors is an integer number (30243583440).

Almost surely, 21028708246220 is an apocalyptic number.

1028708246220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1028708246220 is an abundant number, since it is smaller than the sum of its proper divisors (1874675764020).

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

1028708246220 is a wasteful number, since it uses less digits than its factorization.

1028708246220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248015 (or 248013 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 42.

The spelling of 1028708246220 in words is "one trillion, twenty-eight billion, seven hundred eight million, two hundred forty-six thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 193 359 386 579 718 772 965 1077 1158 1436 1795 1930 2154 2316 2895 3590 3860 4308 5385 5790 7180 10770 11580 21540 69287 138574 207861 247451 277148 346435 415722 494902 692870 742353 831444 989804 1039305 1237255 1385740 1484706 2078610 2474510 2969412 3711765 4157220 4949020 7423530 14847060 47758043 88834909 95516086 143274129 177669818 191032172 238790215 266504727 286548258 355339636 444174545 477580430 533009454 573096516 716370645 888349090 955160860 1066018908 1332523635 1432741290 1776698180 2665047270 2865482580 5330094540 17145137437 34290274874 51435412311 68580549748 85725687185 102870824622 171451374370 205741649244 257177061555 342902748740 514354123110 1028708246220