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144261432 = 23337731307
BaseRepresentation
bin10001001100101…
…00000100111000
3101001110020111000
420212110010320
5243412331212
622152005000
73401126160
oct1046240470
9331406430
10144261432
1174482827
1240390760
1323b6cbc3
14152335a0
15c9e91dc
hex8994138

144261432 has 128 divisors (see below), whose sum is σ = 464601600. Its totient is φ = 40621824.

The previous prime is 144261427. The next prime is 144261443. The reversal of 144261432 is 234162441.

It is a happy number.

144261432 is a `hidden beast` number, since 1 + 4 + 42 + 614 + 3 + 2 = 666.

It is a super-2 number, since 2×1442614322 = 41622721525381248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is a junction number, because it is equal to n+sod(n) for n = 144261396 and 144261405.

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, 109723 + ... + 111029.

It is an arithmetic number, because the mean of its divisors is an integer number (3629700).

Almost surely, 2144261432 is an apocalyptic number.

144261432 is a gapful number since it is divisible by the number (12) 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 144261432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232300800).

144261432 is an abundant number, since it is smaller than the sum of its proper divisors (320340168).

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

144261432 is a wasteful number, since it uses less digits than its factorization.

144261432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402 (or 1392 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 144261432 is about 12010.8880604225. Note that the first 3 decimals coincide. The cubic root of 144261432 is about 524.4652841448.

The spelling of 144261432 in words is "one hundred forty-four million, two hundred sixty-one thousand, four hundred thirty-two".

Divisors: 1 2 3 4 6 7 8 9 12 14 18 21 24 27 28 36 42 54 56 63 72 73 84 108 126 146 168 189 216 219 252 292 378 438 504 511 584 657 756 876 1022 1307 1314 1512 1533 1752 1971 2044 2614 2628 3066 3921 3942 4088 4599 5228 5256 6132 7842 7884 9149 9198 10456 11763 12264 13797 15684 15768 18298 18396 23526 27447 27594 31368 35289 36596 36792 47052 54894 55188 70578 73192 82341 94104 95411 109788 110376 141156 164682 190822 219576 247023 282312 286233 329364 381644 494046 572466 658728 667877 763288 858699 988092 1144932 1335754 1717398 1976184 2003631 2289864 2576097 2671508 3434796 4007262 5152194 5343016 6010893 6869592 8014524 10304388 12021786 16029048 18032679 20608776 24043572 36065358 48087144 72130716 144261432