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13238886 = 2317129793
BaseRepresentation
bin110010100000…
…001001100110
3220220121100010
4302200021212
511342121021
61151431050
7220346223
oct62401146
926817303
1013238886
117522631
124525486
132986b7b
141a8894a
151267976
hexca0266

13238886 has 16 divisors (see below), whose sum is σ = 28035504. Its totient is φ = 4153344.

The previous prime is 13238881. The next prime is 13238893. The reversal of 13238886 is 68883231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13238881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64795 + ... + 64998.

It is an arithmetic number, because the mean of its divisors is an integer number (1752219).

Almost surely, 213238886 is an apocalyptic number.

13238886 is an abundant number, since it is smaller than the sum of its proper divisors (14796618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13238886 is a wasteful number, since it uses less digits than its factorization.

13238886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129815.

The product of its digits is 55296, while the sum is 39.

The square root of 13238886 is about 3638.5279990678. The cubic root of 13238886 is about 236.5649945699.

The spelling of 13238886 in words is "thirteen million, two hundred thirty-eight thousand, eight hundred eighty-six".

Divisors: 1 2 3 6 17 34 51 102 129793 259586 389379 778758 2206481 4412962 6619443 13238886