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68185600 = 29527761
BaseRepresentation
bin1000001000001…
…10111000000000
311202022012001121
410010012320000
5114423414400
610433242024
71455365560
oct404067000
9152265047
1068185600
113554193a
121aa03314
1311184a12
1490acda0
155ebd21a
hex4106e00

68185600 has 120 divisors (see below), whose sum is σ = 193322448. Its totient is φ = 23347200.

The previous prime is 68185597. The next prime is 68185603. The reversal of 68185600 is 658186.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68185597) and next prime (68185603).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68185603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89220 + ... + 89980.

Almost surely, 268185600 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 68185600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96661224).

68185600 is an abundant number, since it is smaller than the sum of its proper divisors (125136848).

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

68185600 is an equidigital number, since it uses as much as digits as its factorization.

68185600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 68185600 is about 8257.4572357355. The cubic root of 68185600 is about 408.5365234287.

The spelling of 68185600 in words is "sixty-eight million, one hundred eighty-five thousand, six hundred".

Divisors: 1 2 4 5 7 8 10 14 16 20 25 28 32 35 40 50 56 64 70 80 100 112 128 140 160 175 200 224 256 280 320 350 400 448 512 560 640 700 761 800 896 1120 1280 1400 1522 1600 1792 2240 2560 2800 3044 3200 3584 3805 4480 5327 5600 6088 6400 7610 8960 10654 11200 12176 12800 15220 17920 19025 21308 22400 24352 26635 30440 38050 42616 44800 48704 53270 60880 76100 85232 89600 97408 106540 121760 133175 152200 170464 194816 213080 243520 266350 304400 340928 389632 426160 487040 532700 608800 681856 852320 974080 1065400 1217600 1363712 1704640 1948160 2130800 2435200 2727424 3409280 4261600 4870400 6818560 8523200 9740800 13637120 17046400 34092800 68185600