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12718053 = 34157013
BaseRepresentation
bin110000100000…
…111111100101
3212221010220000
4300200333211
511223434203
61132331513
7213046605
oct60407745
925833800
1012718053
1171a7297
124313b99
132833a9a
141990c05
1511b34a3
hexc20fe5

12718053 has 10 divisors (see below), whose sum is σ = 18998694. Its totient is φ = 8478648.

The previous prime is 12718033. The next prime is 12718061. The reversal of 12718053 is 35081721.

12718053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11512449 + 1205604 = 3393^2 + 1098^2 .

It is not a de Polignac number, because 12718053 - 28 = 12717797 is a prime.

It is a super-2 number, since 2×127180532 = 323497744221618, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12718003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 78426 + ... + 78587.

Almost surely, 212718053 is an apocalyptic number.

It is an amenable number.

12718053 is a deficient number, since it is larger than the sum of its proper divisors (6280641).

12718053 is an equidigital number, since it uses as much as digits as its factorization.

12718053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157025 (or 157016 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 12718053 is about 3566.2379337335. The cubic root of 12718053 is about 233.4211531109.

Adding to 12718053 its reverse (35081721), we get a palindrome (47799774).

The spelling of 12718053 in words is "twelve million, seven hundred eighteen thousand, fifty-three".

Divisors: 1 3 9 27 81 157013 471039 1413117 4239351 12718053