Base | Representation |
---|---|
bin | 111001101010… |
… | …0011101100010 |
3 | 2002212212021100 |
4 | 1303110131202 |
5 | 30214332440 |
6 | 2555535230 |
7 | 514645122 |
oct | 163243542 |
9 | 62785240 |
10 | 30230370 |
11 | 16078585 |
12 | a15a516 |
13 | 6355ac1 |
14 | 402cc82 |
15 | 29c2230 |
hex | 1cd4762 |
30230370 has 24 divisors (see below), whose sum is σ = 78599196. Its totient is φ = 8061408.
The previous prime is 30230339. The next prime is 30230381. The reversal of 30230370 is 7303203.
It can be written as a sum of positive squares in 2 ways, for example, as 30107169 + 123201 = 5487^2 + 351^2 .
It is a Harshad number since it is a multiple of its sum of digits (18).
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167857 + ... + 168036.
Almost surely, 230230370 is an apocalyptic number.
30230370 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
30230370 is an abundant number, since it is smaller than the sum of its proper divisors (48368826).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30230370 is a wasteful number, since it uses less digits than its factorization.
30230370 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 335906 (or 335903 counting only the distinct ones).
The product of its (nonzero) digits is 378, while the sum is 18.
The square root of 30230370 is about 5498.2151649422. The cubic root of 30230370 is about 311.5165713577.
Adding to 30230370 its reverse (7303203), we get a palindrome (37533573).
It can be divided in two parts, 30 and 230370, that added together give a square (230400 = 4802).
The spelling of 30230370 in words is "thirty million, two hundred thirty thousand, three hundred seventy".
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