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72605260 = 225721341139
BaseRepresentation
bin1000101001111…
…01111001001100
312001121201200201
410110331321030
5122041332020
611112103244
71541064100
oct424757114
9161551621
1072605260
1137a90452
1220394b24
13120715c0
1498dd900
156592a0a
hex453de4c

72605260 has 144 divisors (see below), whose sum is σ = 197074080. Its totient is φ = 22256640.

The previous prime is 72605243. The next prime is 72605279. The reversal of 72605260 is 6250627.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 522271 + ... + 522409.

It is an arithmetic number, because the mean of its divisors is an integer number (1368570).

Almost surely, 272605260 is an apocalyptic number.

72605260 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 72605260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98537040).

72605260 is an abundant number, since it is smaller than the sum of its proper divisors (124468820).

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

72605260 is a wasteful number, since it uses less digits than its factorization.

72605260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 72605260 is about 8520.8720211021. The cubic root of 72605260 is about 417.1792461487.

Adding to 72605260 its reverse (6250627), we get a palindrome (78855887).

The spelling of 72605260 in words is "seventy-two million, six hundred five thousand, two hundred sixty".

Divisors: 1 2 4 5 7 10 13 14 20 26 28 35 41 49 52 65 70 82 91 98 130 139 140 164 182 196 205 245 260 278 287 364 410 455 490 533 556 574 637 695 820 910 973 980 1066 1148 1274 1390 1435 1807 1820 1946 2009 2132 2548 2665 2780 2870 3185 3614 3731 3892 4018 4865 5330 5699 5740 6370 6811 7228 7462 8036 9035 9730 10045 10660 11398 12649 12740 13622 14924 18070 18655 19460 20090 22796 25298 26117 27244 28495 34055 36140 37310 39893 40180 50596 52234 56990 63245 68110 74087 74620 79786 88543 104468 113980 126490 130585 136220 148174 159572 177086 199465 252980 261170 279251 296348 354172 370435 398930 442715 518609 522340 558502 740870 797860 885430 1037218 1117004 1396255 1481740 1770860 2074436 2593045 2792510 3630263 5186090 5585020 7260526 10372180 14521052 18151315 36302630 72605260