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143830 = 2519757
BaseRepresentation
bin100011000111010110
321022022001
4203013112
514100310
63025514
71136221
oct430726
9238261
10143830
1199075
126b29a
135060b
143a5b8
152c93a
hex231d6

143830 has 16 divisors (see below), whose sum is σ = 272880. Its totient is φ = 54432.

The previous prime is 143827. The next prime is 143831. The reversal of 143830 is 38341.

143830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 143798 and 143807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189 + ... + 568.

It is an arithmetic number, because the mean of its divisors is an integer number (17055).

2143830 is an apocalyptic number.

143830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

143830 is the 190-th decagonal number.

143830 is a deficient number, since it is larger than the sum of its proper divisors (129050).

143830 is a wasteful number, since it uses less digits than its factorization.

143830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 143830 is about 379.2492584040. The cubic root of 143830 is about 52.3941935566.

It can be divided in two parts, 14 and 3830, that added together give a square (3844 = 622).

The spelling of 143830 in words is "one hundred forty-three thousand, eight hundred thirty".

Divisors: 1 2 5 10 19 38 95 190 757 1514 3785 7570 14383 28766 71915 143830