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76888680 = 233511311879
BaseRepresentation
bin1001001010100…
…11101001101000
312100200100102220
410211103221220
5124140414210
611343554040
71622354151
oct445235150
9170610386
1076888680
113a446670
12218bb920
1312c1117b
14a2d6928
156b3bc70
hex4953a68

76888680 has 128 divisors (see below), whose sum is σ = 259891200. Its totient is φ = 18028800.

The previous prime is 76888673. The next prime is 76888729. The reversal of 76888680 is 8688867.

It is a super-2 number, since 2×768886802 = 11823738224284800, which contains 22 as substring.

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, 39981 + ... + 41859.

It is an arithmetic number, because the mean of its divisors is an integer number (2030400).

Almost surely, 276888680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76888680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129945600).

76888680 is an abundant number, since it is smaller than the sum of its proper divisors (183002520).

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

76888680 is a wasteful number, since it uses less digits than its factorization.

76888680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935 (or 1931 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 51.

The square root of 76888680 is about 8768.6190474897. The cubic root of 76888680 is about 425.2269698847.

The spelling of 76888680 in words is "seventy-six million, eight hundred eighty-eight thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 11 12 15 20 22 24 30 31 33 40 44 55 60 62 66 88 93 110 120 124 132 155 165 186 220 248 264 310 330 341 372 440 465 620 660 682 744 930 1023 1240 1320 1364 1705 1860 1879 2046 2728 3410 3720 3758 4092 5115 5637 6820 7516 8184 9395 10230 11274 13640 15032 18790 20460 20669 22548 28185 37580 40920 41338 45096 56370 58249 62007 75160 82676 103345 112740 116498 124014 165352 174747 206690 225480 232996 248028 291245 310035 349494 413380 465992 496056 582490 620070 640739 698988 826760 873735 1164980 1240140 1281478 1397976 1747470 1922217 2329960 2480280 2562956 3203695 3494940 3844434 5125912 6407390 6989880 7688868 9611085 12814780 15377736 19222170 25629560 38444340 76888680