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13826680 = 23571923113
BaseRepresentation
bin110100101111…
…101001111000
3222000110122021
4310233221320
512014423210
61212204224
7225345010
oct64575170
928013567
1013826680
11789420a
124769674
132b3158a
141b9cc40
151331bda
hexd2fa78

13826680 has 128 divisors (see below), whose sum is σ = 39398400. Its totient is φ = 4257792.

The previous prime is 13826677. The next prime is 13826689. The reversal of 13826680 is 8662831.

13826680 is nontrivially palindromic in base 12.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13826689) 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, 122304 + ... + 122416.

It is an arithmetic number, because the mean of its divisors is an integer number (307800).

Almost surely, 213826680 is an apocalyptic number.

13826680 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 13826680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19699200).

13826680 is an abundant number, since it is smaller than the sum of its proper divisors (25571720).

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

13826680 is a wasteful number, since it uses less digits than its factorization.

13826680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 13826680 is about 3718.4243975103. The cubic root of 13826680 is about 240.0155082571.

The spelling of 13826680 in words is "thirteen million, eight hundred twenty-six thousand, six hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 19 20 23 28 35 38 40 46 56 70 76 92 95 113 115 133 140 152 161 184 190 226 230 266 280 322 380 437 452 460 532 565 644 665 760 791 805 874 904 920 1064 1130 1288 1330 1582 1610 1748 2147 2185 2260 2599 2660 3059 3164 3220 3496 3955 4294 4370 4520 5198 5320 6118 6328 6440 7910 8588 8740 10396 10735 12236 12995 15029 15295 15820 17176 17480 18193 20792 21470 24472 25990 30058 30590 31640 36386 42940 49381 51980 60116 61180 72772 75145 85880 90965 98762 103960 120232 122360 145544 150290 181930 197524 246905 300580 345667 363860 395048 493810 601160 691334 727720 987620 1382668 1728335 1975240 2765336 3456670 6913340 13826680