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13826140 = 225838329
BaseRepresentation
bin110100101111…
…100001011100
3222000102220021
4310233201130
512014414030
61212201524
7225343306
oct64574134
928012807
1013826140
117893869
1247692a4
132b31263
141b9c976
15133197a
hexd2f85c

13826140 has 24 divisors (see below), whose sum is σ = 29388240. Its totient is φ = 5463168.

The previous prime is 13826107. The next prime is 13826147. The reversal of 13826140 is 4162831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13826147) 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, 2505 + ... + 5824.

It is an arithmetic number, because the mean of its divisors is an integer number (1224510).

Almost surely, 213826140 is an apocalyptic number.

13826140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13826140 is an abundant number, since it is smaller than the sum of its proper divisors (15562100).

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

13826140 is a wasteful number, since it uses less digits than its factorization.

13826140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8421 (or 8419 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 13826140 is about 3718.3517854017. The cubic root of 13826140 is about 240.0123836203.

Adding to 13826140 its reverse (4162831), we get a palindrome (17988971).

The spelling of 13826140 in words is "thirteen million, eight hundred twenty-six thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 83 166 332 415 830 1660 8329 16658 33316 41645 83290 166580 691307 1382614 2765228 3456535 6913070 13826140