Base | Representation |
---|---|
bin | 110001100101… |
… | …110111011010 |
3 | 220110110212012 |
4 | 301211313122 |
5 | 11312001104 |
6 | 1142345522 |
7 | 215333216 |
oct | 61456732 |
9 | 26413765 |
10 | 13000154 |
11 | 737a232 |
12 | 442b2a2 |
13 | 29022cb |
14 | 1a25946 |
15 | 121bd6e |
hex | c65dda |
13000154 has 4 divisors (see below), whose sum is σ = 19500234. Its totient is φ = 6500076.
The previous prime is 13000139. The next prime is 13000159. The reversal of 13000154 is 45100031.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45100031 = 17 ⋅2652943.
It can be written as a sum of positive squares in only one way, i.e., 9778129 + 3222025 = 3127^2 + 1795^2 .
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (13000159) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3250037 + ... + 3250040.
Almost surely, 213000154 is an apocalyptic number.
13000154 is a deficient number, since it is larger than the sum of its proper divisors (6500080).
13000154 is an equidigital number, since it uses as much as digits as its factorization.
13000154 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6500079.
The product of its (nonzero) digits is 60, while the sum is 14.
The square root of 13000154 is about 3605.5726313583. The cubic root of 13000154 is about 235.1343972442.
Adding to 13000154 its reverse (45100031), we get a palindrome (58100185).
The spelling of 13000154 in words is "thirteen million, one hundred fifty-four", and thus it is an aban number.
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