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223528830 = 23575991777
BaseRepresentation
bin11010101001011…
…00011101111110
3120120121102220120
431110230131332
5424210410310
634102555410
75352651360
oct1524543576
9516542816
10223528830
111051a3578
1262a38b66
13374049a5
1421988d30
1514955b70
hexd52c77e

223528830 has 64 divisors (see below), whose sum is σ = 614476800. Its totient is φ = 50978304.

The previous prime is 223528793. The next prime is 223528873. The reversal of 223528830 is 38825322.

It is a junction number, because it is equal to n+sod(n) for n = 223528791 and 223528800.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124902 + ... + 126678.

It is an arithmetic number, because the mean of its divisors is an integer number (9601200).

Almost surely, 2223528830 is an apocalyptic number.

223528830 is an abundant number, since it is smaller than the sum of its proper divisors (390947970).

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

223528830 is a wasteful number, since it uses less digits than its factorization.

223528830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 223528830 is about 14950.8805760731. The cubic root of 223528830 is about 606.8916771240.

The spelling of 223528830 in words is "two hundred twenty-three million, five hundred twenty-eight thousand, eight hundred thirty".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 210 599 1198 1777 1797 2995 3554 3594 4193 5331 5990 8386 8885 8985 10662 12439 12579 17770 17970 20965 24878 25158 26655 37317 41930 53310 62195 62895 74634 124390 125790 186585 373170 1064423 2128846 3193269 5322115 6386538 7450961 10644230 14901922 15966345 22352883 31932690 37254805 44705766 74509610 111764415 223528830