Base | Representation |
---|---|
bin | 111001100111… |
… | …1111110101101 |
3 | 2002211221002110 |
4 | 1303033332231 |
5 | 30213241023 |
6 | 2555314233 |
7 | 514540446 |
oct | 163177655 |
9 | 62757073 |
10 | 30212013 |
11 | 16065807 |
12 | a14b979 |
13 | 634a640 |
14 | 40262cd |
15 | 29bba93 |
hex | 1ccffad |
30212013 has 8 divisors (see below), whose sum is σ = 43381408. Its totient is φ = 18591984.
The previous prime is 30212003. The next prime is 30212051. The reversal of 30212013 is 31021203.
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 30212013 - 214 = 30195629 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 30212013.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30212003) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387295 + ... + 387372.
It is an arithmetic number, because the mean of its divisors is an integer number (5422676).
Almost surely, 230212013 is an apocalyptic number.
It is an amenable number.
30212013 is a deficient number, since it is larger than the sum of its proper divisors (13169395).
30212013 is a wasteful number, since it uses less digits than its factorization.
30212013 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 774683.
The product of its (nonzero) digits is 36, while the sum is 12.
The square root of 30212013 is about 5496.5455515260. The cubic root of 30212013 is about 311.4535037915.
Adding to 30212013 its reverse (31021203), we get a palindrome (61233216).
The spelling of 30212013 in words is "thirty million, two hundred twelve thousand, thirteen".
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