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68411970 = 232511193637
BaseRepresentation
bin1000001001111…
…10001001000010
311202201200120200
410010332021002
5120003140340
610442150030
71460330544
oct404761102
9152650520
1068411970
1135686a20
121aab2316
1311233a73
14912b694
156015330
hex413e242

68411970 has 96 divisors (see below), whose sum is σ = 204310080. Its totient is φ = 15707520.

The previous prime is 68411953. The next prime is 68411971. The reversal of 68411970 is 7911486.

It is not an unprimeable number, because it can be changed into a prime (68411971) 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, 16992 + ... + 20628.

It is an arithmetic number, because the mean of its divisors is an integer number (2128230).

Almost surely, 268411970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68411970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102155040).

68411970 is an abundant number, since it is smaller than the sum of its proper divisors (135898110).

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

68411970 is a wasteful number, since it uses less digits than its factorization.

68411970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3680 (or 3677 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 68411970 is about 8271.1528821562. The cubic root of 68411970 is about 408.9881254237.

The spelling of 68411970 in words is "sixty-eight million, four hundred eleven thousand, nine hundred seventy".

Divisors: 1 2 3 5 6 9 10 11 15 18 19 22 30 33 38 45 55 57 66 90 95 99 110 114 165 171 190 198 209 285 330 342 418 495 570 627 855 990 1045 1254 1710 1881 2090 3135 3637 3762 6270 7274 9405 10911 18185 18810 21822 32733 36370 40007 54555 65466 69103 80014 109110 120021 138206 163665 200035 207309 240042 327330 345515 360063 400070 414618 600105 621927 691030 720126 760133 1036545 1200210 1243854 1520266 1800315 2073090 2280399 3109635 3600630 3800665 4560798 6219270 6841197 7601330 11401995 13682394 22803990 34205985 68411970