Base | Representation |
---|---|
bin | 101111001100… |
… | …000010100001 |
3 | 212021110120011 |
4 | 233030002201 |
5 | 11131320311 |
6 | 1121044521 |
7 | 210100243 |
oct | 57140241 |
9 | 25243504 |
10 | 12370081 |
11 | 6a89909 |
12 | 4186741 |
13 | 2741599 |
14 | 1900093 |
15 | 1145321 |
hex | bcc0a1 |
12370081 has 4 divisors (see below), whose sum is σ = 12379312. Its totient is φ = 12360852.
The previous prime is 12370079. The next prime is 12370087. The reversal of 12370081 is 18007321.
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, and also a brilliant number, because the two primes have the same length.
It is a cyclic number.
It is not a de Polignac number, because 12370081 - 21 = 12370079 is a prime.
It is a super-2 number, since 2×123700812 = 306037807893122, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (12370087) 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, 2175 + ... + 5428.
It is an arithmetic number, because the mean of its divisors is an integer number (3094828).
Almost surely, 212370081 is an apocalyptic number.
It is an amenable number.
12370081 is a deficient number, since it is larger than the sum of its proper divisors (9231).
12370081 is an equidigital number, since it uses as much as digits as its factorization.
12370081 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 9230.
The product of its (nonzero) digits is 336, while the sum is 22.
The square root of 12370081 is about 3517.1125941602. The cubic root of 12370081 is about 231.2725991062.
The spelling of 12370081 in words is "twelve million, three hundred seventy thousand, eighty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.069 sec. • engine limits •