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68489468 = 2261727751
BaseRepresentation
bin1000001010100…
…01000011111100
311202212121212222
410011101003330
5120013130333
610443544512
71461102515
oct405210374
9152777788
1068489468
113572a173
121ab2b138
1311260118
14914ba0c
15602d298
hex41510fc

68489468 has 12 divisors (see below), whose sum is σ = 120055152. Its totient is φ = 34188000.

The previous prime is 68489467. The next prime is 68489567. The reversal of 68489468 is 86498486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68489461) 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 3 ways as a sum of consecutive naturals, for example, 11408 + ... + 16343.

It is an arithmetic number, because the mean of its divisors is an integer number (10004596).

Almost surely, 268489468 is an apocalyptic number.

It is an amenable number.

68489468 is a deficient number, since it is larger than the sum of its proper divisors (51565684).

68489468 is a wasteful number, since it uses less digits than its factorization.

68489468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28372 (or 28370 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 53.

The square root of 68489468 is about 8275.8363927763. The cubic root of 68489468 is about 409.1425028950.

The spelling of 68489468 in words is "sixty-eight million, four hundred eighty-nine thousand, four hundred sixty-eight".

Divisors: 1 2 4 617 1234 2468 27751 55502 111004 17122367 34244734 68489468