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68681848 = 23149157367
BaseRepresentation
bin1000001100000…
…00000001111000
311210020101210011
410012000001320
5120040304343
610452031304
71462533424
oct406000170
9153211704
1068681848
1135850764
121b002534
13112c9861
14919bb84
15606a29d
hex4180078

68681848 has 32 divisors (see below), whose sum is σ = 130824000. Its totient is φ = 33800832.

The previous prime is 68681839. The next prime is 68681849. The reversal of 68681848 is 84818686.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68681849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186961 + ... + 187327.

It is an arithmetic number, because the mean of its divisors is an integer number (4088250).

Almost surely, 268681848 is an apocalyptic number.

It is an amenable number.

68681848 is a deficient number, since it is larger than the sum of its proper divisors (62142152).

68681848 is a wasteful number, since it uses less digits than its factorization.

68681848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679 (or 675 counting only the distinct ones).

The product of its digits is 589824, while the sum is 49.

The square root of 68681848 is about 8287.4512366590. The cubic root of 68681848 is about 409.5252247687.

The spelling of 68681848 in words is "sixty-eight million, six hundred eighty-one thousand, eight hundred forty-eight".

Divisors: 1 2 4 8 149 157 298 314 367 596 628 734 1192 1256 1468 2936 23393 46786 54683 57619 93572 109366 115238 187144 218732 230476 437464 460952 8585231 17170462 34340924 68681848