Base | Representation |
---|---|
bin | 10001101010101… |
… | …11100111010001 |
3 | 101022212202021012 |
4 | 20311113213101 |
5 | 300420124311 |
6 | 22412340305 |
7 | 3446514350 |
oct | 1065274721 |
9 | 338782235 |
10 | 148208081 |
11 | 76728a1a |
12 | 41774695 |
13 | 249223b8 |
14 | 1597d997 |
15 | d02878b |
hex | 8d579d1 |
148208081 has 4 divisors (see below), whose sum is σ = 169380672. Its totient is φ = 127035492.
The previous prime is 148208017. The next prime is 148208083. The reversal of 148208081 is 180802841.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 148208081 - 26 = 148208017 is a prime.
It is a super-2 number, since 2×1482080812 = 43931270547405122, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (148208083) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10586285 + ... + 10586298.
It is an arithmetic number, because the mean of its divisors is an integer number (42345168).
Almost surely, 2148208081 is an apocalyptic number.
It is an amenable number.
148208081 is a deficient number, since it is larger than the sum of its proper divisors (21172591).
148208081 is an equidigital number, since it uses as much as digits as its factorization.
148208081 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 21172590.
The product of its (nonzero) digits is 4096, while the sum is 32.
The square root of 148208081 is about 12174.0741331733. The cubic root of 148208081 is about 529.2050274737.
The spelling of 148208081 in words is "one hundred forty-eight million, two hundred eight thousand, eighty-one".
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