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68160222 = 23213594937
BaseRepresentation
bin1000001000000…
…00101011011110
311202020220020200
410010000223132
5114422111342
610432524330
71455231564
oct404005336
9152226220
1068160222
1135524869
121a9b06a6
13111762c0
1490a3a34
155eb594c
hex4100ade

68160222 has 48 divisors (see below), whose sum is σ = 161768880. Its totient is φ = 20612736.

The previous prime is 68160221. The next prime is 68160223. The reversal of 68160222 is 22206186.

It is an interprime number because it is at equal distance from previous prime (68160221) and next prime (68160223).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68160221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11338 + ... + 16274.

It is an arithmetic number, because the mean of its divisors is an integer number (3370185).

Almost surely, 268160222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68160222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80884440).

68160222 is an abundant number, since it is smaller than the sum of its proper divisors (93608658).

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

68160222 is a wasteful number, since it uses less digits than its factorization.

68160222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5017 (or 5014 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 68160222 is about 8255.9204211281. The cubic root of 68160222 is about 408.4858327334.

The spelling of 68160222 in words is "sixty-eight million, one hundred sixty thousand, two hundred twenty-two".

Divisors: 1 2 3 6 9 13 18 26 39 59 78 117 118 177 234 354 531 767 1062 1534 2301 4602 4937 6903 9874 13806 14811 29622 44433 64181 88866 128362 192543 291283 385086 577629 582566 873849 1155258 1747698 2621547 3786679 5243094 7573358 11360037 22720074 34080111 68160222