Base | Representation |
---|---|
bin | 11100001110011100… |
… | …110111100111101110 |
3 | 2220020011101021220210 |
4 | 130032130313213232 |
5 | 444032122014300 |
6 | 21531204523250 |
7 | 2122020055560 |
oct | 341634674756 |
9 | 86204337823 |
10 | 30307219950 |
11 | 119426a9a17 |
12 | 5a599b0526 |
13 | 2b1cc20257 |
14 | 167717b330 |
15 | bc5ab2050 |
hex | 70e7379ee |
30307219950 has 192 divisors, whose sum is σ = 89200719360. Its totient is φ = 6662960640.
The previous prime is 30307219883. The next prime is 30307219951. The reversal of 30307219950 is 5991270303.
It is a junction number, because it is equal to n+sod(n) for n = 30307219899 and 30307219908.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30307219951) by changing a digit.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8615592 + ... + 8619108.
It is an arithmetic number, because the mean of its divisors is an integer number (464587080).
Almost surely, 230307219950 is an apocalyptic number.
30307219950 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 30307219950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44600359680).
30307219950 is an abundant number, since it is smaller than the sum of its proper divisors (58893499410).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30307219950 is a wasteful number, since it uses less digits than its factorization.
30307219950 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3851 (or 3846 counting only the distinct ones).
The product of its (nonzero) digits is 51030, while the sum is 39.
The spelling of 30307219950 in words is "thirty billion, three hundred seven million, two hundred nineteen thousand, nine hundred fifty".
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