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13672120 = 23571123193
BaseRepresentation
bin110100001001…
…111010111000
3221201121121211
4310021322320
512000001440
61205012504
7224132260
oct64117270
927647554
1013672120
117799080
1246b4134
132aa9117
141b5c7a0
151300eea
hexd09eb8

13672120 has 128 divisors (see below), whose sum is σ = 40227840. Its totient is φ = 4055040.

The previous prime is 13672111. The next prime is 13672121. The reversal of 13672120 is 2127631.

13672120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 13672091 and 13672100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13672121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70744 + ... + 70936.

It is an arithmetic number, because the mean of its divisors is an integer number (314280).

Almost surely, 213672120 is an apocalyptic number.

13672120 is a gapful number since it is divisible by the number (10) 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 13672120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20113920).

13672120 is an abundant number, since it is smaller than the sum of its proper divisors (26555720).

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

13672120 is a wasteful number, since it uses less digits than its factorization.

13672120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 13672120 is about 3697.5829943356. The cubic root of 13672120 is about 239.1178261600.

Adding to 13672120 its reverse (2127631), we get a palindrome (15799751).

The spelling of 13672120 in words is "thirteen million, six hundred seventy-two thousand, one hundred twenty".

Divisors: 1 2 4 5 7 8 10 11 14 20 22 23 28 35 40 44 46 55 56 70 77 88 92 110 115 140 154 161 184 193 220 230 253 280 308 322 385 386 440 460 506 616 644 770 772 805 920 965 1012 1265 1288 1351 1540 1544 1610 1771 1930 2024 2123 2530 2702 3080 3220 3542 3860 4246 4439 5060 5404 6440 6755 7084 7720 8492 8855 8878 10120 10615 10808 13510 14168 14861 16984 17710 17756 21230 22195 27020 29722 31073 35420 35512 42460 44390 48829 54040 59444 62146 70840 74305 84920 88780 97658 118888 124292 148610 155365 177560 195316 244145 248584 297220 310730 341803 390632 488290 594440 621460 683606 976580 1242920 1367212 1709015 1953160 2734424 3418030 6836060 13672120