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68080308 = 22317267293
BaseRepresentation
bin1000000111011…
…01001010110100
311202002211121220
410003231022310
5114412032213
610431110340
71454446602
oct403551264
9152084556
1068080308
113547a81a
121a9723b0
1311148b0a
149082872
155e9be23
hex40ed2b4

68080308 has 72 divisors (see below), whose sum is σ = 171851232. Its totient is φ = 20967936.

The previous prime is 68080303. The next prime is 68080321. The reversal of 68080308 is 80308086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68080301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 232210 + ... + 232502.

Almost surely, 268080308 is an apocalyptic number.

68080308 is a gapful number since it is divisible by the number (68) 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 68080308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85925616).

68080308 is an abundant number, since it is smaller than the sum of its proper divisors (103770924).

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

68080308 is a wasteful number, since it uses less digits than its factorization.

68080308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 68080308 is about 8251.0792021408. The cubic root of 68080308 is about 408.3261281342.

The spelling of 68080308 in words is "sixty-eight million, eighty thousand, three hundred eight".

Divisors: 1 2 3 4 6 12 17 34 51 67 68 102 134 201 204 268 289 293 402 578 586 804 867 879 1139 1156 1172 1734 1758 2278 3417 3468 3516 4556 4981 6834 9962 13668 14943 19363 19631 19924 29886 38726 39262 58089 58893 59772 77452 78524 84677 116178 117786 169354 232356 235572 254031 333727 338708 508062 667454 1001181 1016124 1334908 2002362 4004724 5673359 11346718 17020077 22693436 34040154 68080308