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13826830 = 252116553
BaseRepresentation
bin110100101111…
…101100001110
3222000110211211
4310233230032
512014424310
61212205034
7225345313
oct64575416
928013754
1013826830
117894336
12476977a
132b31674
141b9cd0a
151331c8a
hexd2fb0e

13826830 has 16 divisors (see below), whose sum is σ = 25010064. Its totient is φ = 5503680.

The previous prime is 13826821. The next prime is 13826843. The reversal of 13826830 is 3862831.

It is a junction number, because it is equal to n+sod(n) for n = 13826792 and 13826801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1167 + ... + 5386.

It is an arithmetic number, because the mean of its divisors is an integer number (1563129).

Almost surely, 213826830 is an apocalyptic number.

13826830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13826830 is a deficient number, since it is larger than the sum of its proper divisors (11183234).

13826830 is a wasteful number, since it uses less digits than its factorization.

13826830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6771.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 13826830 is about 3718.4445672889. Note that the first 3 decimals coincide. The cubic root of 13826830 is about 240.0163761974.

The spelling of 13826830 in words is "thirteen million, eight hundred twenty-six thousand, eight hundred thirty".

Divisors: 1 2 5 10 211 422 1055 2110 6553 13106 32765 65530 1382683 2765366 6913415 13826830