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13208670 = 234523709
BaseRepresentation
bin110010011000…
…110001011110
3220212001220000
4302120301132
511340134140
61151035130
7220162146
oct62306136
926761800
1013208670
117501962
12450baa6
1329761a7
141a7b926
15125da30
hexc98c5e

13208670 has 80 divisors (see below), whose sum is σ = 37113120. Its totient is φ = 3364416.

The previous prime is 13208669. The next prime is 13208719. The reversal of 13208670 is 7680231.

13208670 is digitally balanced in base 2 and base 4, because in such bases 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 (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 18276 + ... + 18984.

It is an arithmetic number, because the mean of its divisors is an integer number (463914).

It is a vampire number, since it can be written as 20706381 (with its own digits).

Almost surely, 213208670 is an apocalyptic number.

13208670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13208670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18556560).

13208670 is an abundant number, since it is smaller than the sum of its proper divisors (23904450).

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

13208670 is a wasteful number, since it uses less digits than its factorization.

13208670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751 (or 742 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 13208670 is about 3634.3733985379. The cubic root of 13208670 is about 236.3848814058.

The spelling of 13208670 in words is "thirteen million, two hundred eight thousand, six hundred seventy".

Divisors: 1 2 3 5 6 9 10 15 18 23 27 30 45 46 54 69 81 90 115 135 138 162 207 230 270 345 405 414 621 690 709 810 1035 1242 1418 1863 2070 2127 3105 3545 3726 4254 6210 6381 7090 9315 10635 12762 16307 18630 19143 21270 31905 32614 38286 48921 57429 63810 81535 95715 97842 114858 146763 163070 191430 244605 287145 293526 440289 489210 574290 733815 880578 1320867 1467630 2201445 2641734 4402890 6604335 13208670