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72871260 = 223571115773
BaseRepresentation
bin1000101011111…
…10110101011100
312002010020120120
410111332311130
5122123340020
611121514540
71543252440
oct425766534
9162106516
1072871260
1138152290
12204a2a50
13121356b7
14996c820
1565e6740
hex457ed5c

72871260 has 96 divisors (see below), whose sum is σ = 254403072. Its totient is φ = 15141120.

The previous prime is 72871247. The next prime is 72871303. The reversal of 72871260 is 6217827.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 3267 + ... + 12506.

It is an arithmetic number, because the mean of its divisors is an integer number (2650032).

Almost surely, 272871260 is an apocalyptic number.

72871260 is a gapful number since it is divisible by the number (70) 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 72871260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127201536).

72871260 is an abundant number, since it is smaller than the sum of its proper divisors (181531812).

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

72871260 is a wasteful number, since it uses less digits than its factorization.

72871260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15803 (or 15801 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 72871260 is about 8536.4664820990. The cubic root of 72871260 is about 417.6880909933.

The spelling of 72871260 in words is "seventy-two million, eight hundred seventy-one thousand, two hundred sixty".

Divisors: 1 2 3 4 5 6 7 10 11 12 14 15 20 21 22 28 30 33 35 42 44 55 60 66 70 77 84 105 110 132 140 154 165 210 220 231 308 330 385 420 462 660 770 924 1155 1540 2310 4620 15773 31546 47319 63092 78865 94638 110411 157730 173503 189276 220822 236595 315460 331233 347006 441644 473190 520509 552055 662466 694012 867515 946380 1041018 1104110 1214521 1324932 1656165 1735030 2082036 2208220 2429042 2602545 3312330 3470060 3643563 4858084 5205090 6072605 6624660 7287126 10410180 12145210 14574252 18217815 24290420 36435630 72871260