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68098680 = 233251314551
BaseRepresentation
bin1000000111100…
…01101001111000
311202010202211100
410003301221320
5114413124210
610431331400
71454554266
oct403615170
9152122740
1068098680
1135492601
121a980b60
13111542a0
149089436
155ea25c0
hex40f1a78

68098680 has 96 divisors (see below), whose sum is σ = 238361760. Its totient is φ = 16761600.

The previous prime is 68098669. The next prime is 68098721. The reversal of 68098680 is 8689086.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2596 + ... + 11955.

It is an arithmetic number, because the mean of its divisors is an integer number (2482935).

Almost surely, 268098680 is an apocalyptic number.

68098680 is a gapful number since it is divisible by the number (60) 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 68098680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119180880).

68098680 is an abundant number, since it is smaller than the sum of its proper divisors (170263080).

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

68098680 is a wasteful number, since it uses less digits than its factorization.

68098680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14581 (or 14574 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 68098680 is about 8252.1924359530. The cubic root of 68098680 is about 408.3628548234.

The spelling of 68098680 in words is "sixty-eight million, ninety-eight thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 13 15 18 20 24 26 30 36 39 40 45 52 60 65 72 78 90 104 117 120 130 156 180 195 234 260 312 360 390 468 520 585 780 936 1170 1560 2340 4680 14551 29102 43653 58204 72755 87306 116408 130959 145510 174612 189163 218265 261918 291020 349224 378326 436530 523836 567489 582040 654795 756652 873060 945815 1047672 1134978 1309590 1513304 1702467 1746120 1891630 2269956 2619180 2837445 3404934 3783260 4539912 5238360 5674890 6809868 7566520 8512335 11349780 13619736 17024670 22699560 34049340 68098680