Base | Representation |
---|---|
bin | 101111110101… |
… | …000100000011 |
3 | 212121000001122 |
4 | 233311010003 |
5 | 11202204430 |
6 | 1124422455 |
7 | 211400162 |
oct | 57650403 |
9 | 25530048 |
10 | 12538115 |
11 | 7094087 |
12 | 4247a2b |
13 | 279cc05 |
14 | 19453d9 |
15 | 1179ee5 |
hex | bf5103 |
12538115 has 8 divisors (see below), whose sum is σ = 15252288. Its totient is φ = 9892800.
The previous prime is 12538111. The next prime is 12538117. The reversal of 12538115 is 51183521.
It is a happy number.
12538115 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 12538115 - 22 = 12538111 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (12538111) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16811 + ... + 17540.
It is an arithmetic number, because the mean of its divisors is an integer number (1906536).
Almost surely, 212538115 is an apocalyptic number.
12538115 is a deficient number, since it is larger than the sum of its proper divisors (2714173).
12538115 is an equidigital number, since it uses as much as digits as its factorization.
12538115 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 34429.
The product of its digits is 1200, while the sum is 26.
The square root of 12538115 is about 3540.9200781718. The cubic root of 12538115 is about 232.3150878764.
The spelling of 12538115 in words is "twelve million, five hundred thirty-eight thousand, one hundred fifteen".
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