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253008 = 24327251
BaseRepresentation
bin111101110001010000
3110212001200
4331301100
531044013
65231200
72102430
oct756120
9425050
10253008
111630a8
12102500
138b212
14682c0
154ee73
hex3dc50

253008 has 60 divisors (see below), whose sum is σ = 812448. Its totient is φ = 72000.

The previous prime is 253003. The next prime is 253013. The reversal of 253008 is 800352.

253008 is nontrivially palindromic in base 5.

253008 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 5032-1.

It is an interprime number because it is at equal distance from previous prime (253003) and next prime (253013).

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 (253003) by changing a digit.

253008 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, 883 + ... + 1133.

253008 is a Friedman number, since it can be written as 503^2-8^0, using all its digits and the basic arithmetic operations.

2253008 is an apocalyptic number.

253008 is a gapful number since it is divisible by the number (28) 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 253008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406224).

253008 is an abundant number, since it is smaller than the sum of its proper divisors (559440).

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

253008 is a wasteful number, since it uses less digits than its factorization.

253008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 253008 is about 502.9990059632. Note that the first 3 decimals coincide. The cubic root of 253008 is about 63.2477020626.

The spelling of 253008 in words is "two hundred fifty-three thousand, eight".

Divisors: 1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 36 42 48 56 63 72 84 112 126 144 168 251 252 336 502 504 753 1004 1008 1506 1757 2008 2259 3012 3514 4016 4518 5271 6024 7028 9036 10542 12048 14056 15813 18072 21084 28112 31626 36144 42168 63252 84336 126504 253008