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80072160 = 2535723831
BaseRepresentation
bin1001100010111…
…00110111100000
312120200002100120
410301130313200
5130444302120
611540120240
71661413350
oct461346740
9176602316
1080072160
1141220443
1222996080
131378719c
14a8c4b60
15706a140
hex4c5cde0

80072160 has 96 divisors (see below), whose sum is σ = 288271872. Its totient is φ = 18301440.

The previous prime is 80072089. The next prime is 80072183. The reversal of 80072160 is 6127008.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 80072160.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8556 + ... + 15275.

It is an arithmetic number, because the mean of its divisors is an integer number (3002832).

Almost surely, 280072160 is an apocalyptic number.

80072160 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80072160 is an abundant number, since it is smaller than the sum of its proper divisors (208199712).

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

80072160 is a wasteful number, since it uses less digits than its factorization.

80072160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23856 (or 23848 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 80072160 is about 8948.3048674037. The cubic root of 80072160 is about 431.0164524129.

Adding to 80072160 its reverse (6127008), we get a palindrome (86199168).

The spelling of 80072160 in words is "eighty million, seventy-two thousand, one hundred sixty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 32 35 40 42 48 56 60 70 80 84 96 105 112 120 140 160 168 210 224 240 280 336 420 480 560 672 840 1120 1680 3360 23831 47662 71493 95324 119155 142986 166817 190648 238310 285972 333634 357465 381296 476620 500451 571944 667268 714930 762592 834085 953240 1000902 1143888 1334536 1429860 1668170 1906480 2001804 2287776 2502255 2669072 2859720 3336340 3812960 4003608 5004510 5338144 5719440 6672680 8007216 10009020 11438880 13345360 16014432 20018040 26690720 40036080 80072160