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30022212220 = 225711131499611
BaseRepresentation
bin11011111101011101…
…101001101001111100
32212111022002101210221
4123331131221221330
5442441141242340
621443024111124
72111656410340
oct337535515174
985438071727
1030022212220
1111806835440
12599a4654a4
132aa5b71420
14164b38b620
15baaa6544a
hex6fd769a7c

30022212220 has 96 divisors (see below), whose sum is σ = 84650098176. Its totient is φ = 8637753600.

The previous prime is 30022212197. The next prime is 30022212221. The reversal of 30022212220 is 2221222003.

It is a junction number, because it is equal to n+sod(n) for n = 30022212194 and 30022212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30022212221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 729786 + ... + 769825.

It is an arithmetic number, because the mean of its divisors is an integer number (881771856).

Almost surely, 230022212220 is an apocalyptic number.

It is an amenable number.

30022212220 is an abundant number, since it is smaller than the sum of its proper divisors (54627885956).

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

30022212220 is a wasteful number, since it uses less digits than its factorization.

30022212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1499651 (or 1499649 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 30022212220 its reverse (2221222003), we get a palindrome (32243434223).

It can be divided in two parts, 30022 and 212220, that added together give a palindrome (242242).

The spelling of 30022212220 in words is "thirty billion, twenty-two million, two hundred twelve thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 11 13 14 20 22 26 28 35 44 52 55 65 70 77 91 110 130 140 143 154 182 220 260 286 308 364 385 455 572 715 770 910 1001 1430 1540 1820 2002 2860 4004 5005 10010 20020 1499611 2999222 5998444 7498055 10497277 14996110 16495721 19494943 20994554 29992220 32991442 38989886 41989108 52486385 65982884 77979772 82478605 97474715 104972770 115470047 136464601 164957210 194949430 209945540 214444373 230940094 272929202 329914420 389898860 428888746 461880188 545858404 577350235 682323005 857777492 1072221865 1154700470 1364646010 1501110611 2144443730 2309400940 2729292020 3002221222 4288887460 6004442444 7505553055 15011106110 30022212220