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68645050 = 2521996899
BaseRepresentation
bin1000001011101…
…11000010111010
311210011112022021
410011313002322
5120033120200
610451145054
71462321225
oct405670272
9153145267
1068645050
1135826051
121aba518a
13112b5b96
14918c5bc
15605e41a
hex41770ba

68645050 has 24 divisors (see below), whose sum is σ = 128340000. Its totient is φ = 27316080.

The previous prime is 68645033. The next prime is 68645089. The reversal of 68645050 is 5054686.

It is a junction number, because it is equal to n+sod(n) for n = 68644997 and 68645015.

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 11 ways as a sum of consecutive naturals, for example, 6501 + ... + 13399.

It is an arithmetic number, because the mean of its divisors is an integer number (5347500).

Almost surely, 268645050 is an apocalyptic number.

68645050 is a deficient number, since it is larger than the sum of its proper divisors (59694950).

68645050 is a wasteful number, since it uses less digits than its factorization.

68645050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7110 (or 7105 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 68645050 is about 8285.2308356497. The cubic root of 68645050 is about 409.4520739446.

The spelling of 68645050 in words is "sixty-eight million, six hundred forty-five thousand, fifty".

Divisors: 1 2 5 10 25 50 199 398 995 1990 4975 6899 9950 13798 34495 68990 172475 344950 1372901 2745802 6864505 13729010 34322525 68645050