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13252889 = 131019453
BaseRepresentation
bin110010100011…
…100100011001
3220221022112202
4302203210121
511343043024
61152015545
7220435106
oct62434431
926838482
1013252889
117532101
1245315b5
132990360
141a8daad
15126bbae
hexca3919

13252889 has 4 divisors (see below), whose sum is σ = 14272356. Its totient is φ = 12233424.

The previous prime is 13252879. The next prime is 13252927. The reversal of 13252889 is 98825231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 883600 + 12369289 = 940^2 + 3517^2 .

It is a cyclic number.

It is not a de Polignac number, because 13252889 - 212 = 13248793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13252829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509714 + ... + 509739.

It is an arithmetic number, because the mean of its divisors is an integer number (3568089).

Almost surely, 213252889 is an apocalyptic number.

It is an amenable number.

13252889 is a deficient number, since it is larger than the sum of its proper divisors (1019467).

13252889 is a wasteful number, since it uses less digits than its factorization.

13252889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019466.

The product of its digits is 34560, while the sum is 38.

The square root of 13252889 is about 3640.4517576806. The cubic root of 13252889 is about 236.6483714835.

It can be divided in two parts, 13252 and 889, that added together give a palindrome (14141).

The spelling of 13252889 in words is "thirteen million, two hundred fifty-two thousand, eight hundred eighty-nine".

Divisors: 1 13 1019453 13252889