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82128060 = 22335721727
BaseRepresentation
bin1001110010100…
…10110010111100
312201112112112000
410321102302330
5132011044220
612052142300
72015035260
oct471226274
9181475460
1082128060
11423a5033
1223607990
1314026bb1
14ac9c0a0
157324390
hex4e52cbc

82128060 has 96 divisors (see below), whose sum is σ = 292024320. Its totient is φ = 18771264.

The previous prime is 82128041. The next prime is 82128077. The reversal of 82128060 is 6082128.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 7084 + ... + 14643.

It is an arithmetic number, because the mean of its divisors is an integer number (3041920).

Almost surely, 282128060 is an apocalyptic number.

It is an amenable number.

82128060 is an abundant number, since it is smaller than the sum of its proper divisors (209896260).

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

82128060 is a wasteful number, since it uses less digits than its factorization.

82128060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21752 (or 21744 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 82128060 is about 9062.4533102246. The cubic root of 82128060 is about 434.6741912310.

The spelling of 82128060 in words is "eighty-two million, one hundred twenty-eight thousand, sixty".

Divisors: 1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 27 28 30 35 36 42 45 54 60 63 70 84 90 105 108 126 135 140 180 189 210 252 270 315 378 420 540 630 756 945 1260 1890 3780 21727 43454 65181 86908 108635 130362 152089 195543 217270 260724 304178 325905 391086 434540 456267 586629 608356 651810 760445 782172 912534 977715 1173258 1303620 1368801 1520890 1825068 1955430 2281335 2346516 2737602 2933145 3041780 3910860 4106403 4562670 5475204 5866290 6844005 8212806 9125340 11732580 13688010 16425612 20532015 27376020 41064030 82128060