Base | Representation |
---|---|
bin | 111010000101… |
… | …1000110010001 |
3 | 2010022020020220 |
4 | 1310023012101 |
5 | 30244013121 |
6 | 3004423253 |
7 | 516566433 |
oct | 164130621 |
9 | 63266226 |
10 | 30454161 |
11 | 16210731 |
12 | a247b29 |
13 | 640391a |
14 | 408a653 |
15 | 2a186c6 |
hex | 1d0b191 |
30454161 has 4 divisors (see below), whose sum is σ = 40605552. Its totient is φ = 20302772.
The previous prime is 30454159. The next prime is 30454187. The reversal of 30454161 is 16145403.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 30454161 - 21 = 30454159 is a prime.
It is not an unprimeable number, because it can be changed into a prime (30458161) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5075691 + ... + 5075696.
It is an arithmetic number, because the mean of its divisors is an integer number (10151388).
Almost surely, 230454161 is an apocalyptic number.
It is an amenable number.
30454161 is a deficient number, since it is larger than the sum of its proper divisors (10151391).
30454161 is a wasteful number, since it uses less digits than its factorization.
30454161 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10151390.
The product of its (nonzero) digits is 1440, while the sum is 24.
The square root of 30454161 is about 5518.5288800549. The cubic root of 30454161 is about 312.2833860990.
Adding to 30454161 its reverse (16145403), we get a palindrome (46599564).
It can be divided in two parts, 30454 and 161, that multiplied together give a palindrome (4903094).
The spelling of 30454161 in words is "thirty million, four hundred fifty-four thousand, one hundred sixty-one".
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