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68079492 = 2232131743199
BaseRepresentation
bin1000000111011…
…00111110000100
311202002210111200
410003230332010
5114412020432
610431102500
71454444325
oct403547604
9152083450
1068079492
113547a148
121a971a30
1311148630
14908244c
155e9ba7c
hex40ecf84

68079492 has 144 divisors (see below), whose sum is σ = 201801600. Its totient is φ = 19160064.

The previous prime is 68079463. The next prime is 68079497. The reversal of 68079492 is 29497086.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68079497) 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, 342009 + ... + 342207.

It is an arithmetic number, because the mean of its divisors is an integer number (1401400).

Almost surely, 268079492 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 68079492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100900800).

68079492 is an abundant number, since it is smaller than the sum of its proper divisors (133722108).

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

68079492 is a wasteful number, since it uses less digits than its factorization.

68079492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 68079492 is about 8251.0297539156. The cubic root of 68079492 is about 408.3244967499.

The spelling of 68079492 in words is "sixty-eight million, seventy-nine thousand, four hundred ninety-two".

Divisors: 1 2 3 4 6 9 12 13 17 18 26 34 36 39 43 51 52 68 78 86 102 117 129 153 156 172 199 204 221 234 258 306 387 398 442 468 516 559 597 612 663 731 774 796 884 1118 1194 1326 1462 1548 1677 1791 1989 2193 2236 2388 2587 2652 2924 3354 3383 3582 3978 4386 5031 5174 6579 6708 6766 7164 7761 7956 8557 8772 9503 10062 10149 10348 13158 13532 15522 17114 19006 20124 20298 23283 25671 26316 28509 30447 31044 34228 38012 40596 43979 46566 51342 57018 60894 77013 85527 87958 93132 102684 111241 114036 121788 131937 145469 154026 171054 175916 222482 263874 290938 308052 333723 342108 395811 436407 444964 527748 581876 667446 791622 872814 1001169 1309221 1334892 1583244 1745628 1891097 2002338 2618442 3782194 4004676 5236884 5673291 7564388 11346582 17019873 22693164 34039746 68079492