Base | Representation |
---|---|
bin | 1101101111100001011000… |
… | …01000000101100010110100 |
3 | 10222000000102211112011112200 |
4 | 12313300230020011202310 |
5 | 12430111311313241040 |
6 | 144134534113344500 |
7 | 6236221666333050 |
oct | 667605410054264 |
9 | 128000384464480 |
10 | 30220130212020 |
11 | 96a1315738511 |
12 | 3480a44568130 |
13 | 13b29910c7188 |
14 | 76693ab6ac60 |
15 | 37616563a630 |
hex | 1b7c2c2058b4 |
30220130212020 has 576 divisors, whose sum is σ = 106388115724800. Its totient is φ = 6801200640000.
The previous prime is 30220130211979. The next prime is 30220130212021. The reversal of 30220130212020 is 2021203102203.
30220130212020 is a `hidden beast` number, since 3 + 0 + 220 + 1 + 302 + 120 + 20 = 666.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 30220130211984 and 30220130212002.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30220130212021) by changing a digit.
It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 23228385370 + ... + 23228386670.
It is an arithmetic number, because the mean of its divisors is an integer number (184701589800).
Almost surely, 230220130212020 is an apocalyptic number.
30220130212020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 30220130212020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53194057862400).
30220130212020 is an abundant number, since it is smaller than the sum of its proper divisors (76167985512780).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30220130212020 is a wasteful number, since it uses less digits than its factorization.
30220130212020 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2296 (or 2291 counting only the distinct ones).
The product of its (nonzero) digits is 288, while the sum is 18.
Adding to 30220130212020 its reverse (2021203102203), we get a palindrome (32241333314223).
The spelling of 30220130212020 in words is "thirty trillion, two hundred twenty billion, one hundred thirty million, two hundred twelve thousand, twenty".
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