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67744014 = 231317471087
BaseRepresentation
bin1000000100110…
…11000100001110
311201110202022120
410002123010032
5114320302024
610415553410
71451546262
oct402330416
9151422276
1067744014
1135270098
121a82b866
131105ba20
148dd60a2
155e32479
hex409b10e

67744014 has 64 divisors (see below), whose sum is σ = 157925376. Its totient is φ = 19183104.

The previous prime is 67744009. The next prime is 67744037. The reversal of 67744014 is 41044776.

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, 61779 + ... + 62865.

It is an arithmetic number, because the mean of its divisors is an integer number (2467584).

Almost surely, 267744014 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67744014, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78962688).

67744014 is an abundant number, since it is smaller than the sum of its proper divisors (90181362).

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

67744014 is a wasteful number, since it uses less digits than its factorization.

67744014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 67744014 is about 8230.6751849408. The cubic root of 67744014 is about 407.6526864564.

The spelling of 67744014 in words is "sixty-seven million, seven hundred forty-four thousand, fourteen".

Divisors: 1 2 3 6 13 17 26 34 39 47 51 78 94 102 141 221 282 442 611 663 799 1087 1222 1326 1598 1833 2174 2397 3261 3666 4794 6522 10387 14131 18479 20774 28262 31161 36958 42393 51089 55437 62322 84786 102178 110874 153267 240227 306534 480454 664157 720681 868513 1328314 1441362 1737026 1992471 2605539 3984942 5211078 11290669 22581338 33872007 67744014