Base | Representation |
---|---|
bin | 111001111101… |
… | …0010101010000 |
3 | 2010011202001110 |
4 | 1303322111100 |
5 | 30234313423 |
6 | 3003133320 |
7 | 516162300 |
oct | 163722520 |
9 | 63152043 |
10 | 30385488 |
11 | 16174081 |
12 | a214240 |
13 | 63ab5a3 |
14 | 406d600 |
15 | 2a03193 |
hex | 1cfa550 |
30385488 has 60 divisors (see below), whose sum is σ = 91318560. Its totient is φ = 8680896.
The previous prime is 30385471. The next prime is 30385489. The reversal of 30385488 is 88458303.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30385489) 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 11 ways as a sum of consecutive naturals, for example, 4108 + ... + 8811.
It is an arithmetic number, because the mean of its divisors is an integer number (1521976).
Almost surely, 230385488 is an apocalyptic number.
It is an amenable number.
30385488 is an abundant number, since it is smaller than the sum of its proper divisors (60933072).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30385488 is a wasteful number, since it uses less digits than its factorization.
30385488 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 12944 (or 12931 counting only the distinct ones).
The product of its (nonzero) digits is 92160, while the sum is 39.
The square root of 30385488 is about 5512.3033298250. The cubic root of 30385488 is about 312.0484803034.
The spelling of 30385488 in words is "thirty million, three hundred eighty-five thousand, four hundred eighty-eight".
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