Base | Representation |
---|---|
bin | 100110111111001… |
… | …0001000000100001 |
3 | 10101011112211110000 |
4 | 1031332101000201 |
5 | 10134342340400 |
6 | 333450330213 |
7 | 44263150350 |
oct | 11576210041 |
9 | 3334484400 |
10 | 1308168225 |
11 | 611477171 |
12 | 306129969 |
13 | 17b037b50 |
14 | c5a49997 |
15 | 79ca5600 |
hex | 4df91021 |
1308168225 has 240 divisors, whose sum is σ = 3092024320. Its totient is φ = 531878400.
The previous prime is 1308168203. The next prime is 1308168271. The reversal of 1308168225 is 5228618031.
It is a happy number.
It is not a de Polignac number, because 1308168225 - 26 = 1308168161 is a prime.
It is a super-2 number, since 2×13081682252 = 3422608209799301250, which contains 22 as substring.
It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.
It is a self number, because there is not a number n which added to its sum of digits gives 1308168225.
It is a congruent number.
It is an unprimeable number.
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 239 ways as a sum of consecutive naturals, for example, 5712411 + ... + 5712639.
Almost surely, 21308168225 is an apocalyptic number.
1308168225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
1308168225 is an abundant number, since it is smaller than the sum of its proper divisors (1783856095).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1308168225 is a wasteful number, since it uses less digits than its factorization.
1308168225 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 302 (or 288 counting only the distinct ones).
The product of its (nonzero) digits is 23040, while the sum is 36.
The square root of 1308168225 is about 36168.6082812154. The cubic root of 1308168225 is about 1093.6739436638.
The spelling of 1308168225 in words is "one billion, three hundred eight million, one hundred sixty-eight thousand, two hundred twenty-five".
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