Base | Representation |
---|---|
bin | 111001011000… |
… | …0000000001110 |
3 | 2002121021102112 |
4 | 1302300000032 |
5 | 30200043123 |
6 | 2552424022 |
7 | 513453551 |
oct | 162600016 |
9 | 62537375 |
10 | 30081038 |
11 | 15a86369 |
12 | a0a8012 |
13 | 6302b40 |
14 | 3dd0698 |
15 | 2992d78 |
hex | 1cb000e |
30081038 has 8 divisors (see below), whose sum is σ = 48592488. Its totient is φ = 13883544.
The previous prime is 30081031. The next prime is 30081053. The reversal of 30081038 is 83018003.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30081031) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 578456 + ... + 578507.
It is an arithmetic number, because the mean of its divisors is an integer number (6074061).
Almost surely, 230081038 is an apocalyptic number.
30081038 is a deficient number, since it is larger than the sum of its proper divisors (18511450).
30081038 is a wasteful number, since it uses less digits than its factorization.
30081038 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1156978.
The product of its (nonzero) digits is 576, while the sum is 23.
The square root of 30081038 is about 5484.6183094177. The cubic root of 30081038 is about 311.0027811705.
The spelling of 30081038 in words is "thirty million, eighty-one thousand, thirty-eight".
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