Search a number
-
+
30231022220220 = 22351388633628399
BaseRepresentation
bin1101101111110101101010…
…10101110011001110111100
310222001001112220202111212210
412313322311111303032330
512430301113142021340
6144143535003100420
76240055625020023
oct667726525631674
9128031486674783
1030231022220220
1196a59a4a16488
123482b84211710
1313b3a08840543
147672915698ba
153765a1997180
hex1b7eb55733bc

30231022220220 has 48 divisors (see below), whose sum is σ = 84647495116800. Its totient is φ = 8061545649216.

The previous prime is 30231022220213. The next prime is 30231022220221. The reversal of 30231022220220 is 2202222013203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231022220221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6517581 + ... + 10145979.

It is an arithmetic number, because the mean of its divisors is an integer number (1763489481600).

Almost surely, 230231022220220 is an apocalyptic number.

30231022220220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30231022220220 is an abundant number, since it is smaller than the sum of its proper divisors (54416472896580).

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

30231022220220 is a wasteful number, since it uses less digits than its factorization.

30231022220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3767274 (or 3767272 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 30231022220220 its reverse (2202222013203), we get a palindrome (32433244233423).

The spelling of 30231022220220 in words is "thirty trillion, two hundred thirty-one billion, twenty-two million, two hundred twenty thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 138863 277726 416589 555452 694315 833178 1388630 1666356 2082945 2777260 3628399 4165890 7256798 8331780 10885197 14513596 18141995 21770394 36283990 43540788 54425985 72567980 108851970 217703940 503850370337 1007700740674 1511551111011 2015401481348 2519251851685 3023102222022 5038503703370 6046204444044 7557755555055 10077007406740 15115511110110 30231022220220