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13906233 = 3211197393
BaseRepresentation
bin110101000011…
…000100111001
3222011111202200
4311003010321
512024444413
61214020413
7226125645
oct65030471
928144680
1013906233
117938a60
1247a7709
132b5b853
141bbdc25
15134a573
hexd43139

13906233 has 24 divisors (see below), whose sum is σ = 23069280. Its totient is φ = 7983360.

The previous prime is 13906183. The next prime is 13906261. The reversal of 13906233 is 33260931.

13906233 is a `hidden beast` number, since 1 + 39 + 0 + 623 + 3 = 666.

It is not a de Polignac number, because 13906233 - 26 = 13906169 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13906197 and 13906206.

It is not an unprimeable number, because it can be changed into a prime (13906933) 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 23 ways as a sum of consecutive naturals, for example, 1816 + ... + 5577.

It is an arithmetic number, because the mean of its divisors is an integer number (961220).

Almost surely, 213906233 is an apocalyptic number.

It is an amenable number.

13906233 is a deficient number, since it is larger than the sum of its proper divisors (9163047).

13906233 is a wasteful number, since it uses less digits than its factorization.

13906233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7429 (or 7426 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The square root of 13906233 is about 3729.1061931782. The cubic root of 13906233 is about 240.4749449106.

The spelling of 13906233 in words is "thirteen million, nine hundred six thousand, two hundred thirty-three".

Divisors: 1 3 9 11 19 33 57 99 171 209 627 1881 7393 22179 66537 81323 140467 243969 421401 731907 1264203 1545137 4635411 13906233