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228833550 = 232521146229
BaseRepresentation
bin11011010001110…
…11100100001110
3120221120221121200
431220323210032
5432040133200
634412410330
75446024131
oct1550734416
9527527550
10228833550
11108197040
12647769a6
133854138a
142256a218
1515152800
hexda3b90e

228833550 has 72 divisors (see below), whose sum is σ = 670704840. Its totient is φ = 55473600.

The previous prime is 228833531. The next prime is 228833557. The reversal of 228833550 is 55338822.

228833550 is a `hidden beast` number, since 2 + 28 + 83 + 3 + 550 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228833557) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18165 + ... + 28064.

It is an arithmetic number, because the mean of its divisors is an integer number (9315345).

Almost surely, 2228833550 is an apocalyptic number.

228833550 is an abundant number, since it is smaller than the sum of its proper divisors (441871290).

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

228833550 is a wasteful number, since it uses less digits than its factorization.

228833550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46258 (or 46250 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 228833550 is about 15127.2452878903. The cubic root of 228833550 is about 611.6550503857.

The spelling of 228833550 in words is "two hundred twenty-eight million, eight hundred thirty-three thousand, five hundred fifty".

Divisors: 1 2 3 5 6 9 10 11 15 18 22 25 30 33 45 50 55 66 75 90 99 110 150 165 198 225 275 330 450 495 550 825 990 1650 2475 4950 46229 92458 138687 231145 277374 416061 462290 508519 693435 832122 1017038 1155725 1386870 1525557 2080305 2311450 2542595 3051114 3467175 4160610 4576671 5085190 6934350 7627785 9153342 10401525 12712975 15255570 20803050 22883355 25425950 38138925 45766710 76277850 114416775 228833550