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68518430 = 2589167461
BaseRepresentation
bin1000001010110…
…00001000011110
311202221002121122
410011120020132
5120020042210
610444330542
71461253121
oct405301036
9152832548
1068518430
1135749a02
121ab43a52
1311270366
1491583b8
156036b55
hex415821e

68518430 has 32 divisors (see below), whose sum is σ = 125737920. Its totient is φ = 26878720.

The previous prime is 68518391. The next prime is 68518477. The reversal of 68518430 is 3481586.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148400 + ... + 148860.

It is an arithmetic number, because the mean of its divisors is an integer number (3929310).

Almost surely, 268518430 is an apocalyptic number.

68518430 is a deficient number, since it is larger than the sum of its proper divisors (57219490).

68518430 is a wasteful number, since it uses less digits than its factorization.

68518430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 68518430 is about 8277.5860007613. The cubic root of 68518430 is about 409.2001658498.

The spelling of 68518430 in words is "sixty-eight million, five hundred eighteen thousand, four hundred thirty".

Divisors: 1 2 5 10 89 167 178 334 445 461 835 890 922 1670 2305 4610 14863 29726 41029 74315 76987 82058 148630 153974 205145 384935 410290 769870 6851843 13703686 34259215 68518430