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135683280 = 24325316079
BaseRepresentation
bin10000001011001…
…01110011010000
3100110022102110200
420011211303100
5234213331110
621244055200
73235201035
oct1005456320
9313272420
10135683280
116a653947
1239534500
1322158585
141403d38c
15bda26c0
hex8165cd0

135683280 has 120 divisors (see below), whose sum is σ = 470446080. Its totient is φ = 35009280.

The previous prime is 135683269. The next prime is 135683287. The reversal of 135683280 is 82386531.

135683280 is a `hidden beast` number, since 13 + 568 + 3 + 2 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135683287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19281 + ... + 25359.

It is an arithmetic number, because the mean of its divisors is an integer number (3920384).

Almost surely, 2135683280 is an apocalyptic number.

135683280 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 135683280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235223040).

135683280 is an abundant number, since it is smaller than the sum of its proper divisors (334762800).

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

135683280 is a wasteful number, since it uses less digits than its factorization.

135683280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6129 (or 6120 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 135683280 is about 11648.3166165760. The cubic root of 135683280 is about 513.8568037669.

The spelling of 135683280 in words is "one hundred thirty-five million, six hundred eighty-three thousand, two hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 31 36 40 45 48 60 62 72 80 90 93 120 124 144 155 180 186 240 248 279 310 360 372 465 496 558 620 720 744 930 1116 1240 1395 1488 1860 2232 2480 2790 3720 4464 5580 6079 7440 11160 12158 18237 22320 24316 30395 36474 48632 54711 60790 72948 91185 97264 109422 121580 145896 182370 188449 218844 243160 273555 291792 364740 376898 437688 486320 547110 565347 729480 753796 875376 942245 1094220 1130694 1458960 1507592 1696041 1884490 2188440 2261388 2826735 3015184 3392082 3768980 4376880 4522776 5653470 6784164 7537960 8480205 9045552 11306940 13568328 15075920 16960410 22613880 27136656 33920820 45227760 67841640 135683280