Base | Representation |
---|---|
bin | 111001010000… |
… | …1110111011010 |
3 | 2002111022222210 |
4 | 1302201313122 |
5 | 30141220010 |
6 | 2551255550 |
7 | 513122664 |
oct | 162416732 |
9 | 62438883 |
10 | 30023130 |
11 | 15a46905 |
12 | a07a5b6 |
13 | 62b2687 |
14 | 3db7534 |
15 | 2980b20 |
hex | 1ca1dda |
30023130 has 64 divisors (see below), whose sum is σ = 74649600. Its totient is φ = 7723584.
The previous prime is 30023107. The next prime is 30023137. The reversal of 30023130 is 3132003.
It is a happy number.
It is not an unprimeable number, because it can be changed into a prime (30023137) 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, 150771 + ... + 150969.
It is an arithmetic number, because the mean of its divisors is an integer number (1166400).
Almost surely, 230023130 is an apocalyptic number.
30023130 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 30023130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37324800).
30023130 is an abundant number, since it is smaller than the sum of its proper divisors (44626470).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30023130 is a wasteful number, since it uses less digits than its factorization.
30023130 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 363.
The product of its (nonzero) digits is 54, while the sum is 12.
The square root of 30023130 is about 5479.3366386817. The cubic root of 30023130 is about 310.8030859566.
Adding to 30023130 its reverse (3132003), we get a palindrome (33155133).
The spelling of 30023130 in words is "thirty million, twenty-three thousand, one hundred thirty".
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