Base | Representation |
---|---|
bin | 111001010010… |
… | …1011111111000 |
3 | 2002112002101211 |
4 | 1302211133320 |
5 | 30142204013 |
6 | 2551452504 |
7 | 513214240 |
oct | 162453770 |
9 | 62462354 |
10 | 30038008 |
11 | 15a57000 |
12 | a087134 |
13 | 62b9390 |
14 | 3dbcb20 |
15 | 298523d |
hex | 1ca57f8 |
30038008 has 128 divisors (see below), whose sum is σ = 78704640. Its totient is φ = 10454400.
The previous prime is 30037991. The next prime is 30038011. The reversal of 30038008 is 80083003.
It is a Harshad number since it is a multiple of its sum of digits (22).
It is a self number, because there is not a number n which added to its sum of digits gives 30038008.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 968953 + ... + 968983.
It is an arithmetic number, because the mean of its divisors is an integer number (614880).
Almost surely, 230038008 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 30038008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39352320).
30038008 is an abundant number, since it is smaller than the sum of its proper divisors (48666632).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30038008 is a wasteful number, since it uses less digits than its factorization.
30038008 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 90 (or 64 counting only the distinct ones).
The product of its (nonzero) digits is 576, while the sum is 22.
The square root of 30038008 is about 5480.6941166243. The cubic root of 30038008 is about 310.8544170991.
Adding to 30038008 its reverse (80083003), we get a palindrome (110121011).
It can be divided in two parts, 3003 and 8008, that added together give a palindrome (11011).
The spelling of 30038008 in words is "thirty million, thirty-eight thousand, eight".
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