Base | Representation |
---|---|
bin | 101111100100… |
… | …101111111010 |
3 | 212110121101122 |
4 | 233210233322 |
5 | 11143040130 |
6 | 1123145242 |
7 | 211001306 |
oct | 57445772 |
9 | 25417348 |
10 | 12471290 |
11 | 7048957 |
12 | 4215222 |
13 | 2778680 |
14 | 1928d06 |
15 | 11652e5 |
hex | be4bfa |
12471290 has 64 divisors (see below), whose sum is σ = 26078976. Its totient is φ = 4257792.
The previous prime is 12471289. The next prime is 12471299. The reversal of 12471290 is 9217421.
It is a Harshad number since it is a multiple of its sum of digits (26).
It is not an unprimeable number, because it can be changed into a prime (12471299) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128522 + ... + 128618.
It is an arithmetic number, because the mean of its divisors is an integer number (407484).
Almost surely, 212471290 is an apocalyptic number.
12471290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
12471290 is an abundant number, since it is smaller than the sum of its proper divisors (13607686).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12471290 is a wasteful number, since it uses less digits than its factorization.
12471290 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 183.
The product of its (nonzero) digits is 1008, while the sum is 26.
The square root of 12471290 is about 3531.4713647430. The cubic root of 12471290 is about 231.9016254544.
The spelling of 12471290 in words is "twelve million, four hundred seventy-one thousand, two hundred ninety".
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