Base | Representation |
---|---|
bin | 111010111010… |
… | …1100111110101 |
3 | 2011010101210001 |
4 | 1311311213311 |
5 | 30401443420 |
6 | 3022031301 |
7 | 523364503 |
oct | 165654765 |
9 | 64111701 |
10 | 30890485 |
11 | 1648952a |
12 | a418531 |
13 | 65273c2 |
14 | 4161673 |
15 | 2aa2b0a |
hex | 1d759f5 |
30890485 has 8 divisors (see below), whose sum is σ = 39019680. Its totient is φ = 23411664.
The previous prime is 30890459. The next prime is 30890521. The reversal of 30890485 is 58409803.
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 30890485 - 219 = 30366197 is a prime.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162487 + ... + 162676.
It is an arithmetic number, because the mean of its divisors is an integer number (4877460).
Almost surely, 230890485 is an apocalyptic number.
It is an amenable number.
30890485 is a deficient number, since it is larger than the sum of its proper divisors (8129195).
30890485 is a wasteful number, since it uses less digits than its factorization.
30890485 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 325187.
The product of its (nonzero) digits is 34560, while the sum is 37.
The square root of 30890485 is about 5557.9209242306. The cubic root of 30890485 is about 313.7677058626.
It can be divided in two parts, 30890 and 485, that added together give a triangular number (31375 = T250).
The spelling of 30890485 in words is "thirty million, eight hundred ninety thousand, four hundred eighty-five".
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