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220000230 = 232517143791
BaseRepresentation
bin11010001110011…
…10111111100110
3120022222011120200
431013032333212
5422310001410
633455211330
75310654042
oct1507167746
9508864520
10220000230
1110320347a
1261816b46
133676a868
142130b022
15144aa3c0
hexd1cefe6

220000230 has 48 divisors (see below), whose sum is σ = 605651904. Its totient is φ = 55215360.

The previous prime is 220000201. The next prime is 220000237. The reversal of 220000230 is 32000022.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220000237) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70366 + ... + 73425.

It is an arithmetic number, because the mean of its divisors is an integer number (12617748).

Almost surely, 2220000230 is an apocalyptic number.

220000230 is an abundant number, since it is smaller than the sum of its proper divisors (385651674).

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

220000230 is a wasteful number, since it uses less digits than its factorization.

220000230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143821 (or 143818 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 220000230 is about 14832.4047274877. The cubic root of 220000230 is about 603.6812840534.

Adding to 220000230 its reverse (32000022), we get a palindrome (252000252).

The spelling of 220000230 in words is "two hundred twenty million, two hundred thirty", and thus it is an aban number.

Divisors: 1 2 3 5 6 9 10 15 17 18 30 34 45 51 85 90 102 153 170 255 306 510 765 1530 143791 287582 431373 718955 862746 1294119 1437910 2156865 2444447 2588238 4313730 4888894 6470595 7333341 12222235 12941190 14666682 22000023 24444470 36666705 44000046 73333410 110000115 220000230