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13112629 = 29344753
BaseRepresentation
bin110010000001…
…010100110101
3220200012010221
4302001110311
511324101004
61145014341
7216312145
oct62012465
926605127
1013112629
117446792
1244843b1
13294156a
141a54925
151240354
hexc81535

13112629 has 4 divisors (see below), whose sum is σ = 13157676. Its totient is φ = 13067584.

The previous prime is 13112609. The next prime is 13112639. The reversal of 13112629 is 92621131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92621131 = 274133791.

It can be written as a sum of positive squares in 2 ways, for example, as 9012004 + 4100625 = 3002^2 + 2025^2 .

It is a cyclic number.

It is not a de Polignac number, because 13112629 - 27 = 13112501 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 (13112609) 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, 22084 + ... + 22669.

It is an arithmetic number, because the mean of its divisors is an integer number (3289419).

Almost surely, 213112629 is an apocalyptic number.

It is an amenable number.

13112629 is a deficient number, since it is larger than the sum of its proper divisors (45047).

13112629 is an equidigital number, since it uses as much as digits as its factorization.

13112629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45046.

The product of its digits is 648, while the sum is 25.

The square root of 13112629 is about 3621.1364238316. The cubic root of 13112629 is about 235.8105644908.

The spelling of 13112629 in words is "thirteen million, one hundred twelve thousand, six hundred twenty-nine".

Divisors: 1 293 44753 13112629