Base | Representation |
---|---|
bin | 111010011110… |
… | …0010000101010 |
3 | 2010200110111000 |
4 | 1310330100222 |
5 | 30321434110 |
6 | 3013015430 |
7 | 521365503 |
oct | 164742052 |
9 | 63613430 |
10 | 30655530 |
11 | 16338a54 |
12 | a324576 |
13 | 6474489 |
14 | 40ddbaa |
15 | 2a581c0 |
hex | 1d3c42a |
30655530 has 32 divisors (see below), whose sum is σ = 81748800. Its totient is φ = 8174736.
The previous prime is 30655529. The next prime is 30655549. The reversal of 30655530 is 3555603.
It is a happy number.
30655530 is a `hidden beast` number, since 3 + 0 + 655 + 5 + 3 + 0 = 666.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a junction number, because it is equal to n+sod(n) for n = 30655494 and 30655503.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56500 + ... + 57039.
It is an arithmetic number, because the mean of its divisors is an integer number (2554650).
Almost surely, 230655530 is an apocalyptic number.
30655530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
30655530 is an abundant number, since it is smaller than the sum of its proper divisors (51093270).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30655530 is a wasteful number, since it uses less digits than its factorization.
30655530 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 113555 (or 113549 counting only the distinct ones).
The product of its (nonzero) digits is 6750, while the sum is 27.
The square root of 30655530 is about 5536.7436278015. The cubic root of 30655530 is about 312.9701679932.
The spelling of 30655530 in words is "thirty million, six hundred fifty-five thousand, five hundred thirty".
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