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144807768 = 233271716901
BaseRepresentation
bin10001010000110…
…01011101011000
3101002110222220200
420220121131120
5244032322033
622211422200
73405563040
oct1050313530
9332428820
10144807768
1174816246
12405b4960
1324001791
1415336720
15caa6013
hex8a19758

144807768 has 96 divisors (see below), whose sum is σ = 474608160. Its totient is φ = 38937600.

The previous prime is 144807743. The next prime is 144807769. The reversal of 144807768 is 867708441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144807769) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118 + ... + 17018.

It is an arithmetic number, because the mean of its divisors is an integer number (4943835).

Almost surely, 2144807768 is an apocalyptic number.

144807768 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144807768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237304080).

144807768 is an abundant number, since it is smaller than the sum of its proper divisors (329800392).

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

144807768 is a wasteful number, since it uses less digits than its factorization.

144807768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16937 (or 16930 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 144807768 is about 12033.6099321858. The cubic root of 144807768 is about 525.1265218875.

The spelling of 144807768 in words is "one hundred forty-four million, eight hundred seven thousand, seven hundred sixty-eight".

Divisors: 1 2 3 4 6 7 8 9 12 14 17 18 21 24 28 34 36 42 51 56 63 68 72 84 102 119 126 136 153 168 204 238 252 306 357 408 476 504 612 714 952 1071 1224 1428 2142 2856 4284 8568 16901 33802 50703 67604 101406 118307 135208 152109 202812 236614 287317 304218 354921 405624 473228 574634 608436 709842 861951 946456 1064763 1149268 1216872 1419684 1723902 2011219 2129526 2298536 2585853 2839368 3447804 4022438 4259052 5171706 6033657 6895608 8044876 8518104 10343412 12067314 16089752 18100971 20686824 24134628 36201942 48269256 72403884 144807768