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68287260 = 22351935897
BaseRepresentation
bin1000001000111…
…11101100011100
311202111100111210
410010133230130
5114440143020
610435344420
71456301136
oct404375434
9152440453
1068287260
1135601258
121aa52110
13111bc082
1490d8056
155edd3e0
hex411fb1c

68287260 has 48 divisors (see below), whose sum is σ = 192227616. Its totient is φ = 18112512.

The previous prime is 68287231. The next prime is 68287277. The reversal of 68287260 is 6278286.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8632 + ... + 14528.

It is an arithmetic number, because the mean of its divisors is an integer number (4004742).

Almost surely, 268287260 is an apocalyptic number.

68287260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68287260 is an abundant number, since it is smaller than the sum of its proper divisors (123940356).

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

68287260 is a wasteful number, since it uses less digits than its factorization.

68287260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6102 (or 6100 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 68287260 is about 8263.6105910189. The cubic root of 68287260 is about 408.7394558157.

The spelling of 68287260 in words is "sixty-eight million, two hundred eighty-seven thousand, two hundred sixty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 193 386 579 772 965 1158 1930 2316 2895 3860 5790 5897 11580 11794 17691 23588 29485 35382 58970 70764 88455 117940 176910 353820 1138121 2276242 3414363 4552484 5690605 6828726 11381210 13657452 17071815 22762420 34143630 68287260