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12715969 = 71816567
BaseRepresentation
bin110000100000…
…011111000001
3212221001000211
4300200133001
511223402334
61132314121
7213040540
oct60403701
925831024
1012715969
1171a5772
124312941
132832b56
141990157
1511b2a64
hexc207c1

12715969 has 4 divisors (see below), whose sum is σ = 14532544. Its totient is φ = 10899396.

The previous prime is 12715951. The next prime is 12715979. The reversal of 12715969 is 96951721.

12715969 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 12715969 - 27 = 12715841 is a prime.

It is a super-2 number, since 2×127159692 = 323391735217922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12715909) 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, 908277 + ... + 908290.

It is an arithmetic number, because the mean of its divisors is an integer number (3633136).

Almost surely, 212715969 is an apocalyptic number.

It is an amenable number.

12715969 is a deficient number, since it is larger than the sum of its proper divisors (1816575).

12715969 is an equidigital number, since it uses as much as digits as its factorization.

12715969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1816574.

The product of its digits is 34020, while the sum is 40.

The square root of 12715969 is about 3565.9457371082. The cubic root of 12715969 is about 233.4084028297.

The spelling of 12715969 in words is "twelve million, seven hundred fifteen thousand, nine hundred sixty-nine".

Divisors: 1 7 1816567 12715969