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87374438970 = 23571360752727
BaseRepresentation
bin101000101011111101…
…1000010001000111010
322100112021102101111020
41101113323002020322
52412420324021340
6104050025243310
76212135322450
oct1212773021072
9270467371436
1087374438970
1134067658245
1214b25633536
138315b9c980
14432c3249d0
152415aec9d0
hex1457ec223a

87374438970 has 128 divisors (see below), whose sum is σ = 258520743936. Its totient is φ = 18404326656.

The previous prime is 87374438891. The next prime is 87374439037. The reversal of 87374438970 is 7983447378.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1630747 + ... + 1683473.

It is an arithmetic number, because the mean of its divisors is an integer number (2019693312).

Almost surely, 287374438970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87374438970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129260371968).

87374438970 is an abundant number, since it is smaller than the sum of its proper divisors (171146304966).

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

87374438970 is a wasteful number, since it uses less digits than its factorization.

87374438970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53364.

The product of its (nonzero) digits is 28449792, while the sum is 60.

The spelling of 87374438970 in words is "eighty-seven billion, three hundred seventy-four million, four hundred thirty-eight thousand, nine hundred seventy".

Divisors: 1 2 3 5 6 7 10 13 14 15 21 26 30 35 39 42 65 70 78 91 105 130 182 195 210 273 390 455 546 607 910 1214 1365 1821 2730 3035 3642 4249 6070 7891 8498 9105 12747 15782 18210 21245 23673 25494 39455 42490 47346 52727 55237 63735 78910 105454 110474 118365 127470 158181 165711 236730 263635 276185 316362 331422 369089 527270 552370 685451 738178 790905 828555 1107267 1370902 1581810 1657110 1845445 2056353 2214534 3427255 3690890 4112706 4798157 5536335 6854510 9596314 10281765 11072670 14394471 20563530 23990785 28788942 32005289 47981570 64010578 71972355 96015867 143944710 160026445 192031734 224037023 320052890 416068757 448074046 480079335 672111069 832137514 960158670 1120185115 1248206271 1344222138 2080343785 2240370230 2496412542 2912481299 3360555345 4160687570 5824962598 6241031355 6721110690 8737443897 12482062710 14562406495 17474887794 29124812990 43687219485 87374438970