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143472 = 2437261
BaseRepresentation
bin100011000001110000
321021210210
4203001300
514042342
63024120
71135200
oct430160
9237723
10143472
119887a
126b040
13503c4
143a400
152c79c
hex23070

143472 has 60 divisors (see below), whose sum is σ = 438216. Its totient is φ = 40320.

The previous prime is 143467. The next prime is 143477. The reversal of 143472 is 274341.

It is an interprime number because it is at equal distance from previous prime (143467) and next prime (143477).

It is a Harshad number since it is a multiple of its sum of digits (21).

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

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143477) by changing a digit.

143472 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, 2322 + ... + 2382.

2143472 is an apocalyptic number.

143472 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 143472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219108).

143472 is an abundant number, since it is smaller than the sum of its proper divisors (294744).

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

143472 is a wasteful number, since it uses less digits than its factorization.

143472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 73 counting only the distinct ones).

The product of its digits is 672, while the sum is 21.

The square root of 143472 is about 378.7769792371. The cubic root of 143472 is about 52.3506868582.

It can be divided in two parts, 14 and 3472, that added together give a triangular number (3486 = T83).

The spelling of 143472 in words is "one hundred forty-three thousand, four hundred seventy-two", and thus it is an iban number.

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 42 48 49 56 61 84 98 112 122 147 168 183 196 244 294 336 366 392 427 488 588 732 784 854 976 1176 1281 1464 1708 2352 2562 2928 2989 3416 5124 5978 6832 8967 10248 11956 17934 20496 23912 35868 47824 71736 143472