Base | Representation |
---|---|
bin | 111001101010… |
… | …0101100100010 |
3 | 2002212220120220 |
4 | 1303110230202 |
5 | 30214400310 |
6 | 2555543510 |
7 | 514650663 |
oct | 163245442 |
9 | 62786526 |
10 | 30231330 |
11 | 16079278 |
12 | a15ab96 |
13 | 635637c |
14 | 402d36a |
15 | 29c2670 |
hex | 1cd4b22 |
30231330 has 16 divisors (see below), whose sum is σ = 72555264. Its totient is φ = 8061680.
The previous prime is 30231323. The next prime is 30231343. The reversal of 30231330 is 3313203.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503826 + ... + 503885.
It is an arithmetic number, because the mean of its divisors is an integer number (4534704).
Almost surely, 230231330 is an apocalyptic number.
30231330 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
30231330 is an abundant number, since it is smaller than the sum of its proper divisors (42323934).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30231330 is a wasteful number, since it uses less digits than its factorization.
30231330 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1007721.
The product of its (nonzero) digits is 162, while the sum is 15.
The square root of 30231330 is about 5498.3024653069. The cubic root of 30231330 is about 311.5198688446.
Adding to 30231330 its reverse (3313203), we get a palindrome (33544533).
The spelling of 30231330 in words is "thirty million, two hundred thirty-one thousand, three hundred thirty".
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