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228585930 = 23515494919
BaseRepresentation
bin11011001111111…
…11000111001010
3120221010100221120
431213333013022
5432004222210
634403220110
75443643166
oct1547770712
9527110846
10228585930
11108037aa1
1264677636
1338485761
1422503ca6
1515104270
hexd9ff1ca

228585930 has 32 divisors (see below), whose sum is σ = 549072000. Its totient is φ = 60904512.

The previous prime is 228585911. The next prime is 228585953. The reversal of 228585930 is 39585822.

228585930 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44011 + ... + 48929.

It is an arithmetic number, because the mean of its divisors is an integer number (17158500).

Almost surely, 2228585930 is an apocalyptic number.

228585930 is an abundant number, since it is smaller than the sum of its proper divisors (320486070).

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

228585930 is a wasteful number, since it uses less digits than its factorization.

228585930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6478.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 228585930 is about 15119.0585024333. The cubic root of 228585930 is about 611.4343474815.

The spelling of 228585930 in words is "two hundred twenty-eight million, five hundred eighty-five thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 1549 3098 4647 4919 7745 9294 9838 14757 15490 23235 24595 29514 46470 49190 73785 147570 7619531 15239062 22858593 38097655 45717186 76195310 114292965 228585930