Base | Representation |
---|---|
bin | 111001010000… |
… | …1100110000100 |
3 | 2002111021110200 |
4 | 1302201212010 |
5 | 30141201040 |
6 | 2551250500 |
7 | 513116520 |
oct | 162414604 |
9 | 62437420 |
10 | 30022020 |
11 | 15a45a96 |
12 | a079a30 |
13 | 62b2012 |
14 | 3db6d80 |
15 | 2980630 |
hex | 1ca1984 |
30022020 has 72 divisors (see below), whose sum is σ = 104080704. Its totient is φ = 6861888.
The previous prime is 30022007. The next prime is 30022067. The reversal of 30022020 is 2022003.
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is a junction number, because it is equal to n+sod(n) for n = 30021993 and 30022011.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10654 + ... + 13173.
Almost surely, 230022020 is an apocalyptic number.
30022020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
It is an amenable number.
30022020 is an abundant number, since it is smaller than the sum of its proper divisors (74058684).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30022020 is a wasteful number, since it uses less digits than its factorization.
30022020 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 23849 (or 23844 counting only the distinct ones).
The product of its (nonzero) digits is 24, while the sum is 9.
The square root of 30022020 is about 5479.2353481120. The cubic root of 30022020 is about 310.7992556245.
Adding to 30022020 its reverse (2022003), we get a palindrome (32044023).
The spelling of 30022020 in words is "thirty million, twenty-two thousand, twenty".
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