Search a number
-
+
12630081 = 313213187
BaseRepresentation
bin110000001011…
…100001000001
3212202200012210
4300023201001
511213130311
61130412333
7212232252
oct60134101
925680183
1012630081
117147192
1242910a9
132802a29
14196ab29
1511973a6
hexc0b841

12630081 has 8 divisors (see below), whose sum is σ = 16858144. Its totient is φ = 8411040.

The previous prime is 12630077. The next prime is 12630083. The reversal of 12630081 is 18003621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12630081 - 22 = 12630077 is a prime.

It is a super-2 number, since 2×126300812 = 319037892133122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12630083) 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, 2370 + ... + 5556.

It is an arithmetic number, because the mean of its divisors is an integer number (2107268).

Almost surely, 212630081 is an apocalyptic number.

It is an amenable number.

12630081 is a deficient number, since it is larger than the sum of its proper divisors (4228063).

12630081 is a wasteful number, since it uses less digits than its factorization.

12630081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4511.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 12630081 is about 3553.8825247889. The cubic root of 12630081 is about 232.8817085145.

The spelling of 12630081 in words is "twelve million, six hundred thirty thousand, eighty-one".

Divisors: 1 3 1321 3187 3963 9561 4210027 12630081