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12975071 = 2332239
BaseRepresentation
bin110001011111…
…101111011111
3220102012110012
4301133233133
511310200241
61142033435
7215200124
oct61375737
926365405
1012975071
1173623aa
12441887b
1328c3a75
141a1a74b
1512146eb
hexc5fbdf

12975071 has 6 divisors (see below), whose sum is σ = 13085520. Its totient is φ = 12865328.

The previous prime is 12975047. The next prime is 12975073. The reversal of 12975071 is 17057921.

12975071 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12975071 - 218 = 12712927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12975073) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54170 + ... + 54408.

It is an arithmetic number, because the mean of its divisors is an integer number (2180920).

Almost surely, 212975071 is an apocalyptic number.

12975071 is a deficient number, since it is larger than the sum of its proper divisors (110449).

12975071 is an frugal number, since it uses more digits than its factorization.

12975071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 12975071 is about 3602.0925862615. The cubic root of 12975071 is about 234.9830740790.

The spelling of 12975071 in words is "twelve million, nine hundred seventy-five thousand, seventy-one".

Divisors: 1 233 239 54289 55687 12975071