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13145600 = 29521379
BaseRepresentation
bin110010001001…
…011000000000
3220201212101002
4302021120000
511331124400
61145431132
7216510236
oct62113000
926655332
1013145600
117469536
12449b4a8
132953580
141a62956
151249ed5
hexc89600

13145600 has 120 divisors (see below), whose sum is σ = 35518560. Its totient is φ = 4792320.

The previous prime is 13145597. The next prime is 13145603. The reversal of 13145600 is 654131.

It is an interprime number because it is at equal distance from previous prime (13145597) and next prime (13145603).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13145603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166361 + ... + 166439.

It is an arithmetic number, because the mean of its divisors is an integer number (295988).

Almost surely, 213145600 is an apocalyptic number.

13145600 is a gapful number since it is divisible by the number (10) 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 13145600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17759280).

13145600 is an abundant number, since it is smaller than the sum of its proper divisors (22372960).

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

13145600 is an equidigital number, since it uses as much as digits as its factorization.

13145600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 13145600 is about 3625.6861419599. The cubic root of 13145600 is about 236.0080433915.

Adding to 13145600 its reverse (654131), we get a palindrome (13799731).

The spelling of 13145600 in words is "thirteen million, one hundred forty-five thousand, six hundred".

Divisors: 1 2 4 5 8 10 13 16 20 25 26 32 40 50 52 64 65 79 80 100 104 128 130 158 160 200 208 256 260 316 320 325 395 400 416 512 520 632 640 650 790 800 832 1027 1040 1264 1280 1300 1580 1600 1664 1975 2054 2080 2528 2560 2600 3160 3200 3328 3950 4108 4160 5056 5135 5200 6320 6400 6656 7900 8216 8320 10112 10270 10400 12640 12800 15800 16432 16640 20224 20540 20800 25280 25675 31600 32864 33280 40448 41080 41600 50560 51350 63200 65728 82160 83200 101120 102700 126400 131456 164320 166400 202240 205400 252800 262912 328640 410800 505600 525824 657280 821600 1011200 1314560 1643200 2629120 3286400 6572800 13145600