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30302310220 = 22571373228077
BaseRepresentation
bin11100001110001010…
…001000111101001100
32220012211010212000221
4130032022020331030
5444024342411340
621530511401124
72121630246520
oct341612107514
986184125027
1030302310220
111193a956196
125a582231a4
132b1bbc15a0
14167665dd80
15bc544244a
hex70e288f4c

30302310220 has 96 divisors (see below), whose sum is σ = 79393039488. Its totient is φ = 9458767872.

The previous prime is 30302310179. The next prime is 30302310223. The reversal of 30302310220 is 2201320303.

It is a junction number, because it is equal to n+sod(n) for n = 30302310194 and 30302310203.

It is not an unprimeable number, because it can be changed into a prime (30302310223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18822 + ... + 246898.

It is an arithmetic number, because the mean of its divisors is an integer number (827010828).

Almost surely, 230302310220 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 30302310220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39696519744).

30302310220 is an abundant number, since it is smaller than the sum of its proper divisors (49090729268).

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

30302310220 is a wasteful number, since it uses less digits than its factorization.

30302310220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228179 (or 228177 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 30302310220 its reverse (2201320303), we get a palindrome (32503630523).

The spelling of 30302310220 in words is "thirty billion, three hundred two million, three hundred ten thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 13 14 20 26 28 35 52 65 70 73 91 130 140 146 182 260 292 364 365 455 511 730 910 949 1022 1460 1820 1898 2044 2555 3796 4745 5110 6643 9490 10220 13286 18980 26572 33215 66430 132860 228077 456154 912308 1140385 1596539 2280770 2965001 3193078 4561540 5930002 6386156 7982695 11860004 14825005 15965390 16649621 20755007 29650010 31930780 33299242 41510014 59300020 66598484 83020028 83248105 103775035 116547347 166496210 207550070 216445073 233094694 332992420 415100140 432890146 466189388 582736735 865780292 1082225365 1165473470 1515115511 2164450730 2330946940 3030231022 4328901460 6060462044 7575577555 15151155110 30302310220