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13669245 = 3252347281
BaseRepresentation
bin110100001001…
…001101111101
3221201110200100
4310021031331
511444403440
61204551313
7224121012
oct64111575
927643610
1013669245
1177969a7
1246b2539
132aa7a15
141b5b709
151300230
hexd0937d

13669245 has 48 divisors (see below), whose sum is σ = 25339392. Its totient is φ = 6800640.

The previous prime is 13669211. The next prime is 13669247. The reversal of 13669245 is 54296631.

It is a happy number.

It is not a de Polignac number, because 13669245 - 26 = 13669181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13669247) 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 47 ways as a sum of consecutive naturals, for example, 48505 + ... + 48785.

It is an arithmetic number, because the mean of its divisors is an integer number (527904).

Almost surely, 213669245 is an apocalyptic number.

13669245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13669245 is a deficient number, since it is larger than the sum of its proper divisors (11670147).

13669245 is a wasteful number, since it uses less digits than its factorization.

13669245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362 (or 359 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 13669245 is about 3697.1942064219. The cubic root of 13669245 is about 239.1010642644.

The spelling of 13669245 in words is "thirteen million, six hundred sixty-nine thousand, two hundred forty-five".

Divisors: 1 3 5 9 15 23 45 47 69 115 141 207 235 281 345 423 705 843 1035 1081 1405 2115 2529 3243 4215 5405 6463 9729 12645 13207 16215 19389 32315 39621 48645 58167 66035 96945 118863 198105 290835 303761 594315 911283 1518805 2733849 4556415 13669245