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68342450 = 25211137907
BaseRepresentation
bin1000001001011…
…01001010110010
311202121011012212
410010231022302
5114443424300
610440452122
71456621061
oct404551262
9152534185
1068342450
1135639770
121aa7a042
131120b227
1491101d8
155eee935
hex412d2b2

68342450 has 48 divisors (see below), whose sum is σ = 139839264. Its totient is φ = 24643200.

The previous prime is 68342429. The next prime is 68342459. The reversal of 68342450 is 5424386.

It is not an unprimeable number, because it can be changed into a prime (68342459) 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, 74897 + ... + 75803.

It is an arithmetic number, because the mean of its divisors is an integer number (2913318).

Almost surely, 268342450 is an apocalyptic number.

68342450 is an abundant number, since it is smaller than the sum of its proper divisors (71496814).

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

68342450 is a wasteful number, since it uses less digits than its factorization.

68342450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067 (or 1062 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 68342450 is about 8266.9492559226. The cubic root of 68342450 is about 408.8495410451.

The spelling of 68342450 in words is "sixty-eight million, three hundred forty-two thousand, four hundred fifty".

Divisors: 1 2 5 10 11 22 25 50 55 110 137 274 275 550 685 907 1370 1507 1814 3014 3425 4535 6850 7535 9070 9977 15070 19954 22675 37675 45350 49885 75350 99770 124259 248518 249425 498850 621295 1242590 1366849 2733698 3106475 6212950 6834245 13668490 34171225 68342450