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12712037 = 13977849
BaseRepresentation
bin110000011111…
…100001100101
3212220211122012
4300133201211
511223241122
61132244005
7213023222
oct60374145
925824565
1012712037
1171a2818
124310605
132831120
14198c949
1511b17e2
hexc1f865

12712037 has 4 divisors (see below), whose sum is σ = 13689900. Its totient is φ = 11734176.

The previous prime is 12712033. The next prime is 12712057. The reversal of 12712037 is 73021721.

12712037 is digitally balanced in base 2, 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 an emirpimes, since its reverse is a distinct semiprime: 73021721 = 109166931.

It can be written as a sum of positive squares in 2 ways, for example, as 4866436 + 7845601 = 2206^2 + 2801^2 .

It is a cyclic number.

It is not a de Polignac number, because 12712037 - 22 = 12712033 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 (12712033) 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, 488912 + ... + 488937.

It is an arithmetic number, because the mean of its divisors is an integer number (3422475).

Almost surely, 212712037 is an apocalyptic number.

It is an amenable number.

12712037 is a deficient number, since it is larger than the sum of its proper divisors (977863).

12712037 is an equidigital number, since it uses as much as digits as its factorization.

12712037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977862.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 12712037 is about 3565.3943680889. The cubic root of 12712037 is about 233.3843423628.

Adding to 12712037 its reverse (73021721), we get a palindrome (85733758).

The spelling of 12712037 in words is "twelve million, seven hundred twelve thousand, thirty-seven".

Divisors: 1 13 977849 12712037