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76868610 = 23571337761
BaseRepresentation
bin1001001010011…
…10110000000010
312100122022220120
410211032300002
5124134243420
611343321110
71622241510
oct445166002
9170568816
1076868610
113a432585
12218b0196
1312c04cb0
14a2cd4b0
156b35d40
hex494ec02

76868610 has 128 divisors (see below), whose sum is σ = 233501184. Its totient is φ = 15759360.

The previous prime is 76868581. The next prime is 76868657. The reversal of 76868610 is 1686867.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 100630 + ... + 101390.

It is an arithmetic number, because the mean of its divisors is an integer number (1824228).

Almost surely, 276868610 is an apocalyptic number.

76868610 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 76868610, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116750592).

76868610 is an abundant number, since it is smaller than the sum of its proper divisors (156632574).

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

76868610 is a wasteful number, since it uses less digits than its factorization.

76868610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 76868610 is about 8767.4745508613. The cubic root of 76868610 is about 425.1899681312.

It can be divided in two parts, 768 and 68610, that added together give a triangular number (69378 = T372).

The spelling of 76868610 in words is "seventy-six million, eight hundred sixty-eight thousand, six hundred ten".

Divisors: 1 2 3 5 6 7 10 13 14 15 21 26 30 35 37 39 42 65 70 74 78 91 105 111 130 182 185 195 210 222 259 273 370 390 455 481 518 546 555 761 777 910 962 1110 1295 1365 1443 1522 1554 2283 2405 2590 2730 2886 3367 3805 3885 4566 4810 5327 6734 7215 7610 7770 9893 10101 10654 11415 14430 15981 16835 19786 20202 22830 26635 28157 29679 31962 33670 49465 50505 53270 56314 59358 69251 79905 84471 98930 101010 138502 140785 148395 159810 168942 197099 207753 281570 296790 346255 366041 394198 415506 422355 591297 692510 732082 844710 985495 1038765 1098123 1182594 1830205 1970990 2077530 2196246 2562287 2956485 3660410 5124574 5490615 5912970 7686861 10981230 12811435 15373722 25622870 38434305 76868610