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30221021320 = 23573727710531
BaseRepresentation
bin11100001001010100…
…000011000010001000
32220000011011221121221
4130021110003002020
5443343040140240
621514445211424
72116622304610
oct341124030210
986004157557
1030221021320
11118a8a84686
125a34b60b74
132b080cc649
14166993da40
15bbd236a4a
hex709503088

30221021320 has 128 divisors (see below), whose sum is σ = 80107234560. Its totient is φ = 10044103680.

The previous prime is 30221021287. The next prime is 30221021339. The reversal of 30221021320 is 2312012203.

It is a junction number, because it is equal to n+sod(n) for n = 30221021294 and 30221021303.

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 31 ways as a sum of consecutive naturals, for example, 2864455 + ... + 2874985.

It is an arithmetic number, because the mean of its divisors is an integer number (625837770).

Almost surely, 230221021320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30221021320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40053617280).

30221021320 is an abundant number, since it is smaller than the sum of its proper divisors (49886213240).

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

30221021320 is a wasteful number, since it uses less digits than its factorization.

30221021320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10863 (or 10859 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 30221021320 its reverse (2312012203), we get a palindrome (32533033523).

The spelling of 30221021320 in words is "thirty billion, two hundred twenty-one million, twenty-one thousand, three hundred twenty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 37 40 56 70 74 140 148 185 259 277 280 296 370 518 554 740 1036 1108 1295 1385 1480 1939 2072 2216 2590 2770 3878 5180 5540 7756 9695 10249 10360 10531 11080 15512 19390 20498 21062 38780 40996 42124 51245 52655 71743 73717 77560 81992 84248 102490 105310 143486 147434 204980 210620 286972 294868 358715 368585 389647 409960 421240 573944 589736 717430 737170 779294 1434860 1474340 1558588 1948235 2727529 2869720 2917087 2948680 3117176 3896470 5455058 5834174 7792940 10910116 11668348 13637645 14585435 15585880 20419609 21820232 23336696 27275290 29170870 40839218 54550580 58341740 81678436 102098045 107932219 109101160 116683480 163356872 204196090 215864438 408392180 431728876 539661095 755525533 816784360 863457752 1079322190 1511051066 2158644380 3022102132 3777627665 4317288760 6044204264 7555255330 15110510660 30221021320