Base | Representation |
---|---|
bin | 111001111110… |
… | …0111000111000 |
3 | 2010012021102022 |
4 | 1303330320320 |
5 | 30240132320 |
6 | 3003254012 |
7 | 516234650 |
oct | 163747070 |
9 | 63167368 |
10 | 30395960 |
11 | 16180a31 |
12 | a21a308 |
13 | 63b329a |
14 | 4073360 |
15 | 2a06325 |
hex | 1cfce38 |
30395960 has 32 divisors (see below), whose sum is σ = 78161760. Its totient is φ = 10421376.
The previous prime is 30395947. The next prime is 30395993. The reversal of 30395960 is 6959303.
It is a Harshad number since it is a multiple of its sum of digits (35).
It is a zygodrome in base 2.
It is a self number, because there is not a number n which added to its sum of digits gives 30395960.
It is a congruent 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, 53999 + ... + 54558.
It is an arithmetic number, because the mean of its divisors is an integer number (2442555).
Almost surely, 230395960 is an apocalyptic number.
It is an amenable number.
30395960 is an abundant number, since it is smaller than the sum of its proper divisors (47765800).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30395960 is a wasteful number, since it uses less digits than its factorization.
30395960 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 108575 (or 108571 counting only the distinct ones).
The product of its (nonzero) digits is 21870, while the sum is 35.
The square root of 30395960 is about 5513.2531231570. The cubic root of 30395960 is about 312.0843241286.
The spelling of 30395960 in words is "thirty million, three hundred ninety-five thousand, nine hundred sixty".
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