Base | Representation |
---|---|
bin | 111010010000… |
… | …0000101110001 |
3 | 2010110121012111 |
4 | 1310200011301 |
5 | 30304241040 |
6 | 3010325321 |
7 | 520405216 |
oct | 164400561 |
9 | 63417174 |
10 | 30540145 |
11 | 1626a299 |
12 | a289841 |
13 | 6433abc |
14 | 40adb0d |
15 | 2a33dea |
hex | 1d20171 |
30540145 has 8 divisors (see below), whose sum is σ = 36679104. Its totient is φ = 24411504.
The previous prime is 30540131. The next prime is 30540151. The reversal of 30540145 is 54104503.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 30540145 - 27 = 30540017 is a prime.
It is a Duffinian number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7582 + ... + 10888.
It is an arithmetic number, because the mean of its divisors is an integer number (4584888).
Almost surely, 230540145 is an apocalyptic number.
It is an amenable number.
30540145 is a deficient number, since it is larger than the sum of its proper divisors (6138959).
30540145 is a wasteful number, since it uses less digits than its factorization.
30540145 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5159.
The product of its (nonzero) digits is 1200, while the sum is 22.
The square root of 30540145 is about 5526.3138709270. The cubic root of 30540145 is about 312.5770092877.
Adding to 30540145 its reverse (54104503), we get a palindrome (84644648).
The spelling of 30540145 in words is "thirty million, five hundred forty thousand, one hundred forty-five".
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