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68043486 = 23717157607
BaseRepresentation
bin1000000111001…
…00001011011110
311202000222010010
410003210023132
5114404342421
610430224050
71454234340
oct403441336
9152028103
1068043486
1135455095
121a955026
1311135124
149073290
155e91076
hex40e42de

68043486 has 64 divisors (see below), whose sum is σ = 165998592. Its totient is φ = 18150912.

The previous prime is 68043433. The next prime is 68043509. The reversal of 68043486 is 68434086.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111795 + ... + 112401.

It is an arithmetic number, because the mean of its divisors is an integer number (2593728).

Almost surely, 268043486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68043486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82999296).

68043486 is an abundant number, since it is smaller than the sum of its proper divisors (97955106).

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

68043486 is a wasteful number, since it uses less digits than its factorization.

68043486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793.

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 68043486 is about 8248.8475558711. The cubic root of 68043486 is about 408.2524989325.

The spelling of 68043486 in words is "sixty-eight million, forty-three thousand, four hundred eighty-six".

Divisors: 1 2 3 6 7 14 17 21 34 42 51 102 119 157 238 314 357 471 607 714 942 1099 1214 1821 2198 2669 3297 3642 4249 5338 6594 8007 8498 10319 12747 16014 18683 20638 25494 30957 37366 56049 61914 72233 95299 112098 144466 190598 216699 285897 433398 571794 667093 1334186 1620083 2001279 3240166 4002558 4860249 9720498 11340581 22681162 34021743 68043486