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144478824 = 233723139269
BaseRepresentation
bin10001001110010…
…01001001101000
3101001212021200120
420213021021220
5243441310244
622200403240
73403023030
oct1047111150
9331767616
10144478824
1174611096
1240476520
1323c17b39
141528c8c0
15ca3d819
hex89c9268

144478824 has 128 divisors (see below), whose sum is σ = 435456000. Its totient is φ = 39055104.

The previous prime is 144478819. The next prime is 144478837. The reversal of 144478824 is 428874441.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

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 31 ways as a sum of consecutive naturals, for example, 536962 + ... + 537230.

It is an arithmetic number, because the mean of its divisors is an integer number (3402000).

Almost surely, 2144478824 is an apocalyptic number.

144478824 is a gapful number since it is divisible by the number (14) 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 144478824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217728000).

144478824 is an abundant number, since it is smaller than the sum of its proper divisors (290977176).

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

144478824 is a wasteful number, since it uses less digits than its factorization.

144478824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447 (or 443 counting only the distinct ones).

The product of its digits is 229376, while the sum is 42.

The square root of 144478824 is about 12019.9344424169. The cubic root of 144478824 is about 524.7285962273.

The spelling of 144478824 in words is "one hundred forty-four million, four hundred seventy-eight thousand, eight hundred twenty-four".

Divisors: 1 2 3 4 6 7 8 12 14 21 23 24 28 42 46 56 69 84 92 138 139 161 168 184 269 276 278 322 417 483 538 552 556 644 807 834 966 973 1076 1112 1288 1614 1668 1883 1932 1946 2152 2919 3197 3228 3336 3766 3864 3892 5649 5838 6187 6394 6456 7532 7784 9591 11298 11676 12374 12788 15064 18561 19182 22379 22596 23352 24748 25576 37122 37391 38364 43309 44758 45192 49496 67137 74244 74782 76728 86618 89516 112173 129927 134274 148488 149564 173236 179032 224346 259854 261737 268548 299128 346472 448692 519708 523474 537096 785211 859993 897384 1039416 1046948 1570422 1719986 2093896 2579979 3140844 3439972 5159958 6019951 6281688 6879944 10319916 12039902 18059853 20639832 24079804 36119706 48159608 72239412 144478824