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68504184 = 2333745307
BaseRepresentation
bin1000001010101…
…00101001111000
311202220101002000
410011110221320
5120014113214
610444141000
71461163440
oct405245170
9152811060
1068504184
113573a231
121ab37760
1311266a28
149153120
156032809
hex4154a78

68504184 has 64 divisors (see below), whose sum is σ = 217478400. Its totient is φ = 19572192.

The previous prime is 68504179. The next prime is 68504197. The reversal of 68504184 is 48140586.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21142 + ... + 24165.

It is an arithmetic number, because the mean of its divisors is an integer number (3398100).

Almost surely, 268504184 is an apocalyptic number.

It is an amenable number.

68504184 is an abundant number, since it is smaller than the sum of its proper divisors (148974216).

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

68504184 is a wasteful number, since it uses less digits than its factorization.

68504184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45329 (or 45319 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 68504184 is about 8276.7254394477. The cubic root of 68504184 is about 409.1718042853.

The spelling of 68504184 in words is "sixty-eight million, five hundred four thousand, one hundred eighty-four".

Divisors: 1 2 3 4 6 7 8 9 12 14 18 21 24 27 28 36 42 54 56 63 72 84 108 126 168 189 216 252 378 504 756 1512 45307 90614 135921 181228 271842 317149 362456 407763 543684 634298 815526 951447 1087368 1223289 1268596 1631052 1902894 2446578 2537192 2854341 3262104 3805788 4893156 5708682 7611576 8563023 9786312 11417364 17126046 22834728 34252092 68504184