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228441560 = 23519300581
BaseRepresentation
bin11011001110110…
…11110111011000
3120220212000220112
431213123313120
5431440112220
634400143452
75442502244
oct1547336730
9526760815
10228441560
11107a49586
1264607b88
1338434b29
14224a7424
15150c65c5
hexd9dbdd8

228441560 has 32 divisors (see below), whose sum is σ = 541047600. Its totient is φ = 86567040.

The previous prime is 228441553. The next prime is 228441571. The reversal of 228441560 is 65144822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149531 + ... + 151050.

Almost surely, 2228441560 is an apocalyptic number.

228441560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228441560 is an abundant number, since it is smaller than the sum of its proper divisors (312606040).

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

228441560 is a wasteful number, since it uses less digits than its factorization.

228441560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300611 (or 300607 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 228441560 is about 15114.2833108289. The cubic root of 228441560 is about 611.3055974063.

The spelling of 228441560 in words is "two hundred twenty-eight million, four hundred forty-one thousand, five hundred sixty".

Divisors: 1 2 4 5 8 10 19 20 38 40 76 95 152 190 380 760 300581 601162 1202324 1502905 2404648 3005810 5711039 6011620 11422078 12023240 22844156 28555195 45688312 57110390 114220780 228441560