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228185200 = 2452570463
BaseRepresentation
bin11011001100111…
…01010001110000
3120220101000020201
431212131101300
5431403411300
634350444544
75440353655
oct1546352160
9526330221
10228185200
11107893a11
1264503754
1338375239
142243bc2c
151507566a
hexd99d470

228185200 has 30 divisors (see below), whose sum is σ = 548215904. Its totient is φ = 91273920.

The previous prime is 228185173. The next prime is 228185233. The reversal of 228185200 is 2581822.

228185200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×2281852003 (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 284832 + ... + 285631.

Almost surely, 2228185200 is an apocalyptic number.

228185200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228185200 is an abundant number, since it is smaller than the sum of its proper divisors (320030704).

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

228185200 is a wasteful number, since it uses less digits than its factorization.

228185200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570481 (or 570470 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 228185200 is about 15105.8002105152. The cubic root of 228185200 is about 611.0768401963.

The spelling of 228185200 in words is "two hundred twenty-eight million, one hundred eighty-five thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 20 25 40 50 80 100 200 400 570463 1140926 2281852 2852315 4563704 5704630 9127408 11409260 14261575 22818520 28523150 45637040 57046300 114092600 228185200