Base | Representation |
---|---|
bin | 111010010010… |
… | …0111110010001 |
3 | 2010111121122020 |
4 | 1310210332101 |
5 | 30310411040 |
6 | 3011002053 |
7 | 520520430 |
oct | 164447621 |
9 | 63447566 |
10 | 30560145 |
11 | 16283320 |
12 | a299329 |
13 | 643cc35 |
14 | 40b7117 |
15 | 2a39cd0 |
hex | 1d24f91 |
30560145 has 32 divisors (see below), whose sum is σ = 60963840. Its totient is φ = 12699840.
The previous prime is 30560119. The next prime is 30560147. The reversal of 30560145 is 54106503.
It is not a de Polignac number, because 30560145 - 26 = 30560081 is a prime.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (30560147) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12075 + ... + 14384.
It is an arithmetic number, because the mean of its divisors is an integer number (1905120).
Almost surely, 230560145 is an apocalyptic number.
30560145 is a gapful number since it is divisible by the number (35) formed by its first and last digit.
It is an amenable number.
30560145 is a deficient number, since it is larger than the sum of its proper divisors (30403695).
30560145 is a wasteful number, since it uses less digits than its factorization.
30560145 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 26485.
The product of its (nonzero) digits is 1800, while the sum is 24.
The square root of 30560145 is about 5528.1230992083. The cubic root of 30560145 is about 312.6452274317.
Adding to 30560145 its reverse (54106503), we get a palindrome (84666648).
The spelling of 30560145 in words is "thirty million, five hundred sixty thousand, one hundred forty-five".
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