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143460 = 22325797
BaseRepresentation
bin100011000001100100
321021210100
4203001210
514042320
63024100
71135152
oct430144
9237710
10143460
1198869
126b030
13503b5
143a3d2
152c790
hex23064

143460 has 36 divisors (see below), whose sum is σ = 435708. Its totient is φ = 38208.

The previous prime is 143443. The next prime is 143461. The reversal of 143460 is 64341.

It can be written as a sum of positive squares in 2 ways, for example, as 60516 + 82944 = 246^2 + 288^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143461) by changing a digit.

143460 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 219 + ... + 578.

It is an arithmetic number, because the mean of its divisors is an integer number (12103).

2143460 is an apocalyptic number.

143460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143460 is an abundant number, since it is smaller than the sum of its proper divisors (292248).

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

143460 is a wasteful number, since it uses less digits than its factorization.

143460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812 (or 807 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 143460 is about 378.7611384501. The cubic root of 143460 is about 52.3492272801.

The spelling of 143460 in words is "one hundred forty-three thousand, four hundred sixty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 797 1594 2391 3188 3985 4782 7173 7970 9564 11955 14346 15940 23910 28692 35865 47820 71730 143460