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144130220 = 22513554347
BaseRepresentation
bin10001001011101…
…00000010101100
3101001012120111022
420211310002230
5243344131340
622145113312
73400041503
oct1045640254
9331176438
10144130220
11743a3193
1240328838
1323b25270
14151db83a
15c9c03b5
hex89740ac

144130220 has 24 divisors (see below), whose sum is σ = 325956624. Its totient is φ = 53217216.

The previous prime is 144130201. The next prime is 144130241. The reversal of 144130220 is 22031441.

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 7 ways as a sum of consecutive naturals, for example, 276914 + ... + 277433.

It is an arithmetic number, because the mean of its divisors is an integer number (13581526).

Almost surely, 2144130220 is an apocalyptic number.

144130220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144130220 is an abundant number, since it is smaller than the sum of its proper divisors (181826404).

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

144130220 is a wasteful number, since it uses less digits than its factorization.

144130220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554369 (or 554367 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 144130220 is about 12005.4246072348. The cubic root of 144130220 is about 524.3062279734.

Adding to 144130220 its reverse (22031441), we get a palindrome (166161661).

The spelling of 144130220 in words is "one hundred forty-four million, one hundred thirty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 554347 1108694 2217388 2771735 5543470 7206511 11086940 14413022 28826044 36032555 72065110 144130220