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84872160 = 25325173467
BaseRepresentation
bin1010000111100…
…00101111100000
312220200221201100
411003300233200
5133211402120
612231034400
72050254462
oct503605740
9186627640
1084872160
11439a978a
122450ba00
1314777c19
14b3b4132
1576b7490
hex50f0be0

84872160 has 144 divisors (see below), whose sum is σ = 306751536. Its totient is φ = 21295104.

The previous prime is 84872129. The next prime is 84872171. The reversal of 84872160 is 6127848.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22747 + ... + 26213.

It is an arithmetic number, because the mean of its divisors is an integer number (2130219).

Almost surely, 284872160 is an apocalyptic number.

84872160 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84872160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153375768).

84872160 is an abundant number, since it is smaller than the sum of its proper divisors (221879376).

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

84872160 is a wasteful number, since it uses less digits than its factorization.

84872160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3505 (or 3494 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 84872160 is about 9212.6087510542. The cubic root of 84872160 is about 439.4624288881.

The spelling of 84872160 in words is "eighty-four million, eight hundred seventy-two thousand, one hundred sixty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 17 18 20 24 30 32 34 36 40 45 48 51 60 68 72 80 85 90 96 102 120 136 144 153 160 170 180 204 240 255 272 288 306 340 360 408 480 510 544 612 680 720 765 816 1020 1224 1360 1440 1530 1632 2040 2448 2720 3060 3467 4080 4896 6120 6934 8160 10401 12240 13868 17335 20802 24480 27736 31203 34670 41604 52005 55472 58939 62406 69340 83208 104010 110944 117878 124812 138680 156015 166416 176817 208020 235756 249624 277360 294695 312030 332832 353634 416040 471512 499248 530451 554720 589390 624060 707268 832080 884085 943024 998496 1060902 1178780 1248120 1414536 1664160 1768170 1886048 2121804 2357560 2496240 2652255 2829072 3536340 4243608 4715120 4992480 5304510 5658144 7072680 8487216 9430240 10609020 14145360 16974432 21218040 28290720 42436080 84872160