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143129860 = 22526327211
BaseRepresentation
bin10001000011111…
…11110100000100
3100222022202020221
420201333310010
5243120123420
622111434124
73355404136
oct1041776404
9328282227
10143129860
117387a645
123bb25944
1323864b33
141501b056
15c873caa
hex887fd04

143129860 has 24 divisors (see below), whose sum is σ = 301726656. Its totient is φ = 57032160.

The previous prime is 143129837. The next prime is 143129863. The reversal of 143129860 is 68921341.

It is not an unprimeable number, because it can be changed into a prime (143129863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8346 + ... + 18865.

It is an arithmetic number, because the mean of its divisors is an integer number (12571944).

Almost surely, 2143129860 is an apocalyptic number.

143129860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143129860 is an abundant number, since it is smaller than the sum of its proper divisors (158596796).

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

143129860 is a wasteful number, since it uses less digits than its factorization.

143129860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27483 (or 27481 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 143129860 is about 11963.6892303336. The cubic root of 143129860 is about 523.0903989186.

The spelling of 143129860 in words is "one hundred forty-three million, one hundred twenty-nine thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 263 526 1052 1315 2630 5260 27211 54422 108844 136055 272110 544220 7156493 14312986 28625972 35782465 71564930 143129860