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13913208 = 233517421
BaseRepresentation
bin110101000100…
…110001111000
3222011212100000
4311010301320
512030210313
61214113000
7226155201
oct65046170
928155300
1013913208
117943221
1247ab760
132b61a8a
141bc25a8
15134c673
hexd44c78

13913208 has 96 divisors (see below), whose sum is σ = 41474160. Its totient is φ = 4354560.

The previous prime is 13913197. The next prime is 13913213. The reversal of 13913208 is 80231931.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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, 32838 + ... + 33258.

Almost surely, 213913208 is an apocalyptic number.

13913208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13913208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20737080).

13913208 is an abundant number, since it is smaller than the sum of its proper divisors (27560952).

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

13913208 is a wasteful number, since it uses less digits than its factorization.

13913208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 13913208 is about 3730.0412866348. The cubic root of 13913208 is about 240.5151434888.

The spelling of 13913208 in words is "thirteen million, nine hundred thirteen thousand, two hundred eight".

Divisors: 1 2 3 4 6 8 9 12 17 18 24 27 34 36 51 54 68 72 81 102 108 136 153 162 204 216 243 306 324 408 421 459 486 612 648 842 918 972 1224 1263 1377 1684 1836 1944 2526 2754 3368 3672 3789 4131 5052 5508 7157 7578 8262 10104 11016 11367 14314 15156 16524 21471 22734 28628 30312 33048 34101 42942 45468 57256 64413 68202 85884 90936 102303 128826 136404 171768 193239 204606 257652 272808 386478 409212 515304 579717 772956 818424 1159434 1545912 1739151 2318868 3478302 4637736 6956604 13913208