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12906961 = 174871559
BaseRepresentation
bin110001001111…
…000111010001
3220021202000121
4301033013101
511301010321
61140350241
7214464424
oct61170721
926252017
1012906961
117316211
1243a5381
13289ba72
1419dd9bb
1511ee441
hexc4f1d1

12906961 has 8 divisors (see below), whose sum is σ = 13703040. Its totient is φ = 12115008.

The previous prime is 12906953. The next prime is 12906967. The reversal of 12906961 is 16960921.

12906961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12906961 - 23 = 12906953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12906967) 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, 7500 + ... + 9058.

It is an arithmetic number, because the mean of its divisors is an integer number (1712880).

Almost surely, 212906961 is an apocalyptic number.

It is an amenable number.

12906961 is a deficient number, since it is larger than the sum of its proper divisors (796079).

12906961 is a wasteful number, since it uses less digits than its factorization.

12906961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 12906961 is about 3592.6259198531. The cubic root of 12906961 is about 234.5711872230.

The spelling of 12906961 in words is "twelve million, nine hundred six thousand, nine hundred sixty-one".

Divisors: 1 17 487 1559 8279 26503 759233 12906961