Base | Representation |
---|---|
bin | 101111011010… |
… | …101111010010 |
3 | 212101112011010 |
4 | 233122233102 |
5 | 11140232130 |
6 | 1122231350 |
7 | 210440625 |
oct | 57325722 |
9 | 25345133 |
10 | 12430290 |
11 | 7020074 |
12 | 41b5556 |
13 | 2762b02 |
14 | 1917dbc |
15 | 11580b0 |
hex | bdabd2 |
12430290 has 32 divisors (see below), whose sum is σ = 29940480. Its totient is φ = 3302784.
The previous prime is 12430283. The next prime is 12430291. The reversal of 12430290 is 9203421.
It is not an unprimeable number, because it can be changed into a prime (12430291) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10446 + ... + 11574.
It is an arithmetic number, because the mean of its divisors is an integer number (935640).
Almost surely, 212430290 is an apocalyptic number.
12430290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
12430290 is an abundant number, since it is smaller than the sum of its proper divisors (17510190).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12430290 is a wasteful number, since it uses less digits than its factorization.
12430290 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1506.
The product of its (nonzero) digits is 432, while the sum is 21.
The square root of 12430290 is about 3525.6616400330. The cubic root of 12430290 is about 231.6472169951.
It can be divided in two parts, 12430 and 290, that added together give a triangular number (12720 = T159).
The spelling of 12430290 in words is "twelve million, four hundred thirty thousand, two hundred ninety".
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