Base | Representation |
---|---|
bin | 111010110011… |
… | …0110111010000 |
3 | 2011000022212001 |
4 | 1311212313100 |
5 | 30343030112 |
6 | 3020443344 |
7 | 523023322 |
oct | 165466720 |
9 | 64008761 |
10 | 30830032 |
11 | 16448072 |
12 | a3a9554 |
13 | 6505a2c |
14 | 4147612 |
15 | 2a8ec57 |
hex | 1d66dd0 |
30830032 has 20 divisors (see below), whose sum is σ = 61191396. Its totient is φ = 15038720.
The previous prime is 30830021. The next prime is 30830039. The reversal of 30830032 is 23003803.
It can be written as a sum of positive squares in 2 ways, for example, as 6780816 + 24049216 = 2604^2 + 4904^2 .
It is a junction number, because it is equal to n+sod(n) for n = 30829991 and 30830009.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30830039) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22843 + ... + 24154.
Almost surely, 230830032 is an apocalyptic number.
It is an amenable number.
30830032 is a deficient number, since it is larger than the sum of its proper divisors (30361364).
30830032 is a wasteful number, since it uses less digits than its factorization.
30830032 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 47046 (or 47040 counting only the distinct ones).
The product of its (nonzero) digits is 432, while the sum is 19.
The square root of 30830032 is about 5552.4798063568. The cubic root of 30830032 is about 313.5628899757.
Adding to 30830032 its reverse (23003803), we get a palindrome (53833835).
The spelling of 30830032 in words is "thirty million, eight hundred thirty thousand, thirty-two".
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