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13749008 = 2472131971
BaseRepresentation
bin110100011100…
…101100010000
3221212112002112
4310130230100
512004432013
61210404452
7224602400
oct64345420
927775075
1013749008
117840919
124730728
132b05110
141b7c800
151318ba8
hexd1cb10

13749008 has 120 divisors (see below), whose sum is σ = 35622720. Its totient is φ = 5080320.

The previous prime is 13749007. The next prime is 13749011. The reversal of 13749008 is 80094731.

It is not an unprimeable number, because it can be changed into a prime (13749007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 193613 + ... + 193683.

It is an arithmetic number, because the mean of its divisors is an integer number (296856).

Almost surely, 213749008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13749008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17811360).

13749008 is an abundant number, since it is smaller than the sum of its proper divisors (21873712).

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

13749008 is a wasteful number, since it uses less digits than its factorization.

13749008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 13749008 is about 3707.9654798825. The cubic root of 13749008 is about 239.5652313952.

The spelling of 13749008 in words is "thirteen million, seven hundred forty-nine thousand, eight".

Divisors: 1 2 4 7 8 13 14 16 19 26 28 38 49 52 56 71 76 91 98 104 112 133 142 152 182 196 208 247 266 284 304 364 392 494 497 532 568 637 728 784 923 931 988 994 1064 1136 1274 1349 1456 1729 1846 1862 1976 1988 2128 2548 2698 3458 3479 3692 3724 3952 3976 5096 5396 6461 6916 6958 7384 7448 7952 9443 10192 10792 12103 12922 13832 13916 14768 14896 17537 18886 21584 24206 25844 27664 27832 35074 37772 45227 48412 51688 55664 66101 70148 75544 90454 96824 103376 122759 132202 140296 151088 180908 193648 245518 264404 280592 361816 491036 528808 723632 859313 982072 1057616 1718626 1964144 3437252 6874504 13749008