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13049238 = 2319114467
BaseRepresentation
bin110001110001…
…110110010110
3220112222012010
4301301312112
511320033423
61143405050
7215626266
oct61616626
926488163
1013049238
1174030a4
124453786
13291b757
141a397a6
15122b693
hexc71d96

13049238 has 16 divisors (see below), whose sum is σ = 27472320. Its totient is φ = 4120776.

The previous prime is 13049237. The next prime is 13049243. The reversal of 13049238 is 83294031.

It is a super-2 number, since 2×130492382 = 340565224761288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13049237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57120 + ... + 57347.

It is an arithmetic number, because the mean of its divisors is an integer number (1717020).

Almost surely, 213049238 is an apocalyptic number.

13049238 is an abundant number, since it is smaller than the sum of its proper divisors (14423082).

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

13049238 is a wasteful number, since it uses less digits than its factorization.

13049238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114491.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 13049238 is about 3612.3729043386. The cubic root of 13049238 is about 235.4299537893.

The spelling of 13049238 in words is "thirteen million, forty-nine thousand, two hundred thirty-eight".

Divisors: 1 2 3 6 19 38 57 114 114467 228934 343401 686802 2174873 4349746 6524619 13049238