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144208688 = 24131722399
BaseRepresentation
bin10001001100001…
…11001100110000
3101001100120010112
420212013030300
5243404134223
622150520452
73400516331
oct1046071460
9331316115
10144208688
1174447138
1240366128
1323b51bb0
141521c288
15c9d8778
hex8987330

144208688 has 60 divisors (see below), whose sum is σ = 319771200. Its totient is φ = 62616576.

The previous prime is 144208681. The next prime is 144208699. The reversal of 144208688 is 886802441.

It is a super-2 number, since 2×1442086882 = 41592291389362688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (144208681) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 58913 + ... + 61311.

It is an arithmetic number, because the mean of its divisors is an integer number (5329520).

Almost surely, 2144208688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144208688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159885600).

144208688 is an abundant number, since it is smaller than the sum of its proper divisors (175562512).

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

144208688 is a wasteful number, since it uses less digits than its factorization.

144208688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2454 (or 2431 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 41.

The square root of 144208688 is about 12008.6921852465. The cubic root of 144208688 is about 524.4013590691.

The spelling of 144208688 in words is "one hundred forty-four million, two hundred eight thousand, six hundred eighty-eight".

Divisors: 1 2 4 8 13 16 17 26 34 52 68 104 136 208 221 272 289 442 578 884 1156 1768 2312 2399 3536 3757 4624 4798 7514 9596 15028 19192 30056 31187 38384 40783 60112 62374 81566 124748 163132 249496 326264 498992 530179 652528 693311 1060358 1386622 2120716 2773244 4241432 5546488 8482864 9013043 11092976 18026086 36052172 72104344 144208688