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228107860 = 22513198647
BaseRepresentation
bin11011001100010…
…10011001010100
3120220020002011021
431212022121110
5431343422420
634345050524
75436612331
oct1546123124
9526202137
10228107860
111078408a2
1264486a44
1338348c86
142241b988
151505c7aa
hexd98a654

228107860 has 24 divisors (see below), whose sum is σ = 479445120. Its totient is φ = 91163424.

The previous prime is 228107857. The next prime is 228107861. The reversal of 228107860 is 68701822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228107861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22057 + ... + 30703.

It is an arithmetic number, because the mean of its divisors is an integer number (19976880).

Almost surely, 2228107860 is an apocalyptic number.

228107860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228107860 is an abundant number, since it is smaller than the sum of its proper divisors (251337260).

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

228107860 is a wasteful number, since it uses less digits than its factorization.

228107860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9975 (or 9973 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 228107860 is about 15103.2400497377. The cubic root of 228107860 is about 611.0077939081.

The spelling of 228107860 in words is "two hundred twenty-eight million, one hundred seven thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 1319 2638 5276 6595 8647 13190 17294 26380 34588 43235 86470 172940 11405393 22810786 45621572 57026965 114053930 228107860