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258120 = 23335239
BaseRepresentation
bin111111000001001000
3111010002000
4333001020
531224440
65311000
72123352
oct770110
9433060
10258120
11166a25
12105460
1390645
146a0d2
1551730
hex3f048

258120 has 64 divisors (see below), whose sum is σ = 864000. Its totient is φ = 68544.

The previous prime is 258119. The next prime is 258127. The reversal of 258120 is 21852.

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

It is a nialpdrome in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 258093 and 258102.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 258120.

It is not an unprimeable number, because it can be changed into a prime (258127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 961 + ... + 1199.

It is an arithmetic number, because the mean of its divisors is an integer number (13500).

2258120 is an apocalyptic number.

258120 is a gapful number since it is divisible by the number (20) 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 258120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (432000).

258120 is an abundant number, since it is smaller than the sum of its proper divisors (605880).

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

258120 is a wasteful number, since it uses less digits than its factorization.

258120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 258120 is about 508.0551151204. The cubic root of 258120 is about 63.6708359918.

Adding to 258120 its reverse (21852), we get a palindrome (279972).

It can be divided in two parts, 2581 and 20, that added together give a square (2601 = 512).

The spelling of 258120 in words is "two hundred fifty-eight thousand, one hundred twenty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 20 24 27 30 36 40 45 54 60 72 90 108 120 135 180 216 239 270 360 478 540 717 956 1080 1195 1434 1912 2151 2390 2868 3585 4302 4780 5736 6453 7170 8604 9560 10755 12906 14340 17208 21510 25812 28680 32265 43020 51624 64530 86040 129060 258120