Base | Representation |
---|---|
bin | 111010000001… |
… | …0010011101001 |
3 | 2010020101212021 |
4 | 1310002103221 |
5 | 30241340103 |
6 | 3003544441 |
7 | 516356443 |
oct | 164022351 |
9 | 63211767 |
10 | 30418153 |
11 | 16196677 |
12 | a22b121 |
13 | 63c040c |
14 | 407b493 |
15 | 2a0cbbd |
hex | 1d024e9 |
30418153 has 4 divisors (see below), whose sum is σ = 30760020. Its totient is φ = 30076288.
The previous prime is 30418147. The next prime is 30418189. The reversal of 30418153 is 35181403.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35181403 = 41 ⋅858083.
It can be written as a sum of positive squares in 2 ways, for example, as 7118224 + 23299929 = 2668^2 + 4827^2 .
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-30418153 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (30418103) 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, 170800 + ... + 170977.
It is an arithmetic number, because the mean of its divisors is an integer number (7690005).
Almost surely, 230418153 is an apocalyptic number.
It is an amenable number.
30418153 is a deficient number, since it is larger than the sum of its proper divisors (341867).
30418153 is an equidigital number, since it uses as much as digits as its factorization.
30418153 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 341866.
The product of its (nonzero) digits is 1440, while the sum is 25.
The square root of 30418153 is about 5515.2654514538. The cubic root of 30418153 is about 312.1602596854.
Adding to 30418153 its reverse (35181403), we get a palindrome (65599556).
The spelling of 30418153 in words is "thirty million, four hundred eighteen thousand, one hundred fifty-three".
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