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12950081 = 23563047
BaseRepresentation
bin110001011001…
…101001000001
3220100221011122
4301121221001
511303400311
61141322025
7215034224
oct61315101
926327148
1012950081
117345651
124406315
1328b5591
141a115bb
15120c0db
hexc59a41

12950081 has 4 divisors (see below), whose sum is σ = 13513152. Its totient is φ = 12387012.

The previous prime is 12950071. The next prime is 12950083. The reversal of 12950081 is 18005921.

It is a happy number.

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 an emirpimes, since its reverse is a distinct semiprime: 18005921 = 139129539.

It is a cyclic number.

It is not a de Polignac number, because 12950081 - 26 = 12950017 is a prime.

It is a super-2 number, since 2×129500812 = 335409195813122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12950081.

It is not an unprimeable number, because it can be changed into a prime (12950083) 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, 281501 + ... + 281546.

It is an arithmetic number, because the mean of its divisors is an integer number (3378288).

Almost surely, 212950081 is an apocalyptic number.

It is an amenable number.

12950081 is a deficient number, since it is larger than the sum of its proper divisors (563071).

12950081 is an equidigital number, since it uses as much as digits as its factorization.

12950081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563070.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 12950081 is about 3598.6220974145. The cubic root of 12950081 is about 234.8321179100.

The spelling of 12950081 in words is "twelve million, nine hundred fifty thousand, eighty-one".

Divisors: 1 23 563047 12950081