Base | Representation |
---|---|
bin | 111001111100… |
… | …1000110100011 |
3 | 2010011111010220 |
4 | 1303321012203 |
5 | 30234133301 |
6 | 3003054123 |
7 | 516141513 |
oct | 163710643 |
9 | 63144126 |
10 | 30380451 |
11 | 16170312 |
12 | a211343 |
13 | 63a91ca |
14 | 406b843 |
15 | 2a01936 |
hex | 1cf91a3 |
30380451 has 8 divisors (see below), whose sum is σ = 40582224. Its totient is φ = 20216160.
The previous prime is 30380431. The next prime is 30380453. The reversal of 30380451 is 15408303.
30380451 = T10 + T11 + ... + T566.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 30380451 - 26 = 30380387 is a prime.
It is not an unprimeable number, because it can be changed into a prime (30380453) 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, 7420 + ... + 10761.
It is an arithmetic number, because the mean of its divisors is an integer number (5072778).
Almost surely, 230380451 is an apocalyptic number.
30380451 is a deficient number, since it is larger than the sum of its proper divisors (10201773).
30380451 is a wasteful number, since it uses less digits than its factorization.
30380451 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 18741.
The product of its (nonzero) digits is 1440, while the sum is 24.
The square root of 30380451 is about 5511.8464238402. The cubic root of 30380451 is about 312.0312365997.
Adding to 30380451 its reverse (15408303), we get a palindrome (45788754).
The spelling of 30380451 in words is "thirty million, three hundred eighty thousand, four hundred fifty-one".
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