Base | Representation |
---|---|
bin | 111001001110… |
… | …0010001111010 |
3 | 2002110011121101 |
4 | 1302130101322 |
5 | 30140002000 |
6 | 2551002014 |
7 | 512666200 |
oct | 162342172 |
9 | 62404541 |
10 | 30000250 |
11 | 15a306a5 |
12 | a06930a |
13 | 62a5137 |
14 | 3dad070 |
15 | 2978e6a |
hex | 1c9c47a |
30000250 has 96 divisors (see below), whose sum is σ = 68290560. Its totient is φ = 9828000.
The previous prime is 30000247. The next prime is 30000251. The reversal of 30000250 is 5200003.
It is a Harshad number since it is a multiple of its sum of digits (10).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30000251) 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 47 ways as a sum of consecutive naturals, for example, 379711 + ... + 379789.
It is an arithmetic number, because the mean of its divisors is an integer number (711360).
Almost surely, 230000250 is an apocalyptic number.
30000250 is an abundant number, since it is smaller than the sum of its proper divisors (38290310).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30000250 is a wasteful number, since it uses less digits than its factorization.
30000250 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 141 (or 124 counting only the distinct ones).
The product of its (nonzero) digits is 30, while the sum is 10.
The square root of 30000250 is about 5477.2483967773. The cubic root of 30000250 is about 310.7241137131.
30000250 divided by its sum of digits (10) gives a triangular number (3000025 = T2449).
Adding to 30000250 its reverse (5200003), we get a palindrome (35200253).
The spelling of 30000250 in words is "thirty million, two hundred fifty", and thus it is an aban number.
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