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12228000 = 253531019
BaseRepresentation
bin101110101001…
…010110100000
3212000020122220
4232221112200
511112244000
61114031040
7205636101
oct56512640
925006586
1012228000
1169a2094
124118480
1326c1a05
1418a43a8
1511181a0
hexba95a0

12228000 has 96 divisors (see below), whose sum is σ = 40098240. Its totient is φ = 3257600.

The previous prime is 12227993. The next prime is 12228017. The reversal of 12228000 is 82221.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a zygodrome in base 5.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11491 + ... + 12509.

It is an arithmetic number, because the mean of its divisors is an integer number (417690).

Almost surely, 212228000 is an apocalyptic number.

12228000 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 12228000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20049120).

12228000 is an abundant number, since it is smaller than the sum of its proper divisors (27870240).

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

12228000 is a wasteful number, since it uses less digits than its factorization.

12228000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047 (or 1029 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 12228000 is about 3496.8557305099. The cubic root of 12228000 is about 230.3837324548.

The spelling of 12228000 in words is "twelve million, two hundred twenty-eight thousand".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 25 30 32 40 48 50 60 75 80 96 100 120 125 150 160 200 240 250 300 375 400 480 500 600 750 800 1000 1019 1200 1500 2000 2038 2400 3000 3057 4000 4076 5095 6000 6114 8152 10190 12000 12228 15285 16304 20380 24456 25475 30570 32608 40760 48912 50950 61140 76425 81520 97824 101900 122280 127375 152850 163040 203800 244560 254750 305700 382125 407600 489120 509500 611400 764250 815200 1019000 1222800 1528500 2038000 2445600 3057000 4076000 6114000 12228000