Base | Representation |
---|---|
bin | 101110000111… |
… | …101010101110 |
3 | 211202020101220 |
4 | 232013222232 |
5 | 11043340110 |
6 | 1111044210 |
7 | 204522621 |
oct | 56075256 |
9 | 24666356 |
10 | 12090030 |
11 | 6908467 |
12 | 4070666 |
13 | 2673c84 |
14 | 1869db8 |
15 | 10dc370 |
hex | b87aae |
12090030 has 16 divisors (see below), whose sum is σ = 29016144. Its totient is φ = 3224000.
The previous prime is 12090011. The next prime is 12090053. The reversal of 12090030 is 3009021.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is a junction number, because it is equal to n+sod(n) for n = 12089991 and 12090009.
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, 201471 + ... + 201530.
It is an arithmetic number, because the mean of its divisors is an integer number (1813509).
Almost surely, 212090030 is an apocalyptic number.
12090030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
12090030 is an abundant number, since it is smaller than the sum of its proper divisors (16926114).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12090030 is a wasteful number, since it uses less digits than its factorization.
12090030 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 403011.
The product of its (nonzero) digits is 54, while the sum is 15.
The square root of 12090030 is about 3477.0720441199. The cubic root of 12090030 is about 229.5139705091.
Adding to 12090030 its reverse (3009021), we get a palindrome (15099051).
The spelling of 12090030 in words is "twelve million, ninety thousand, thirty".
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