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1206000220 = 225103585437
BaseRepresentation
bin100011111100010…
…0001101001011100
310010001022011021211
41013320201221130
54432214001340
6315400434204
741612555425
oct10770415134
93101264254
101206000220
115698348a7
12297a78964
13162b155c9
14b625264c
1570d235ea
hex47e21a5c

1206000220 has 24 divisors (see below), whose sum is σ = 2557193184. Its totient is φ = 477715776.

The previous prime is 1206000217. The next prime is 1206000221. The reversal of 1206000220 is 220006021.

It is a happy number.

It is a super-3 number, since 3×12060002203 (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1206000220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206000221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290659 + ... + 294778.

It is an arithmetic number, because the mean of its divisors is an integer number (106549716).

Almost surely, 21206000220 is an apocalyptic number.

1206000220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1206000220 is an abundant number, since it is smaller than the sum of its proper divisors (1351192964).

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

1206000220 is a wasteful number, since it uses less digits than its factorization.

1206000220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585549 (or 585547 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1206000220 is about 34727.5138758881. The cubic root of 1206000220 is about 1064.4267878655.

Adding to 1206000220 its reverse (220006021), we get a palindrome (1426006241).

The spelling of 1206000220 in words is "one billion, two hundred six million, two hundred twenty", and thus it is an aban number.

Divisors: 1 2 4 5 10 20 103 206 412 515 1030 2060 585437 1170874 2341748 2927185 5854370 11708740 60300011 120600022 241200044 301500055 603000110 1206000220