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220230220 = 225711313921
BaseRepresentation
bin11010010000001…
…11001001001100
3120100101212001211
431020013021030
5422334331340
633504144204
75312632420
oct1510071114
9510355054
10220230220
11103350251
1261908064
133681b452
142136ab80
15145035ea
hexd20724c

220230220 has 48 divisors (see below), whose sum is σ = 533268288. Its totient is φ = 74833920.

The previous prime is 220230217. The next prime is 220230259. The reversal of 220230220 is 22032022.

It is a self number, because there is not a number n which added to its sum of digits gives 220230220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8860 + ... + 22780.

It is an arithmetic number, because the mean of its divisors is an integer number (11109756).

Almost surely, 2220230220 is an apocalyptic number.

220230220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220230220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266634144).

220230220 is an abundant number, since it is smaller than the sum of its proper divisors (313038068).

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

220230220 is a wasteful number, since it uses less digits than its factorization.

220230220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14050 (or 14048 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 220230220 is about 14840.1556595610. The cubic root of 220230220 is about 603.8915752046.

Adding to 220230220 its reverse (22032022), we get a palindrome (242262242).

The spelling of 220230220 in words is "two hundred twenty million, two hundred thirty thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 113 140 226 452 565 791 1130 1582 2260 3164 3955 7910 13921 15820 27842 55684 69605 97447 139210 194894 278420 389788 487235 974470 1573073 1948940 3146146 6292292 7865365 11011511 15730730 22023022 31461460 44046044 55057555 110115110 220230220