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228015600 = 243521391367
BaseRepresentation
bin11011001011100…
…11110111110000
3120220001101121020
431211303313300
5431332444400
634343055440
75436046341
oct1545636760
9526041536
10228015600
1110778854a
1264441580
1338315c97
14223d60c8
15150402a0
hexd973df0

228015600 has 120 divisors (see below), whose sum is σ = 736202880. Its totient is φ = 60322560.

The previous prime is 228015551. The next prime is 228015677. The reversal of 228015600 is 6510822.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×2280156002 = 103982227686720000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166117 + ... + 167483.

It is an arithmetic number, because the mean of its divisors is an integer number (6135024).

Almost surely, 2228015600 is an apocalyptic number.

228015600 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 228015600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368101440).

228015600 is an abundant number, since it is smaller than the sum of its proper divisors (508187280).

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

228015600 is a wasteful number, since it uses less digits than its factorization.

228015600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527 (or 1516 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 228015600 is about 15100.1854293250. The cubic root of 228015600 is about 610.9254071799.

The spelling of 228015600 in words is "two hundred twenty-eight million, fifteen thousand, six hundred".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 25 30 40 48 50 60 75 80 100 120 139 150 200 240 278 300 400 417 556 600 695 834 1112 1200 1367 1390 1668 2085 2224 2734 2780 3336 3475 4101 4170 5468 5560 6672 6835 6950 8202 8340 10425 10936 11120 13670 13900 16404 16680 20505 20850 21872 27340 27800 32808 33360 34175 41010 41700 54680 55600 65616 68350 82020 83400 102525 109360 136700 164040 166800 190013 205050 273400 328080 380026 410100 546800 570039 760052 820200 950065 1140078 1520104 1640400 1900130 2280156 2850195 3040208 3800260 4560312 4750325 5700390 7600520 9120624 9500650 11400780 14250975 15201040 19001300 22801560 28501950 38002600 45603120 57003900 76005200 114007800 228015600