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72080118 = 2351197139
BaseRepresentation
bin1000100101111…
…01101011110110
312000122001100000
410102331223312
5121423030433
611052532130
71533446055
oct422755366
9160561300
1072080118
1137761950
1220181046
1311c19576
14980439c
1564dc113
hex44bdaf6

72080118 has 96 divisors (see below), whose sum is σ = 179786880. Its totient is φ = 21461760.

The previous prime is 72080117. The next prime is 72080143. The reversal of 72080118 is 81108027.

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

It is a junction number, because it is equal to n+sod(n) for n = 72080091 and 72080100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72080111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 518493 + ... + 518631.

It is an arithmetic number, because the mean of its divisors is an integer number (1872780).

Almost surely, 272080118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72080118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89893440).

72080118 is an abundant number, since it is smaller than the sum of its proper divisors (107706762).

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

72080118 is a wasteful number, since it uses less digits than its factorization.

72080118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 72080118 is about 8490.0010600706. The cubic root of 72080118 is about 416.1710149621.

The spelling of 72080118 in words is "seventy-two million, eighty thousand, one hundred eighteen".

Divisors: 1 2 3 6 9 11 18 22 27 33 54 66 81 97 99 139 162 194 198 243 278 291 297 417 486 582 594 834 873 891 1067 1251 1529 1746 1782 2134 2502 2619 2673 3058 3201 3753 4587 5238 5346 6402 7506 7857 9174 9603 11259 13483 13761 15714 19206 22518 23571 26966 27522 28809 33777 40449 41283 47142 57618 67554 80898 82566 86427 121347 123849 148313 172854 242694 247698 259281 296626 364041 371547 444939 518562 728082 743094 889878 1092123 1334817 2184246 2669634 3276369 4004451 6552738 8008902 12013353 24026706 36040059 72080118