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68093672 = 2338921881
BaseRepresentation
bin1000000111100…
…00011011101000
311202010111221212
410003300123220
5114412444142
610431252252
71454533553
oct403603350
9152114855
1068093672
1135489869
121a97a088
1311151c1a
14908769a
155ea0d82
hex40f06e8

68093672 has 16 divisors (see below), whose sum is σ = 128009700. Its totient is φ = 33957760.

The previous prime is 68093657. The next prime is 68093689. The reversal of 68093672 is 27639086.

It can be written as a sum of positive squares in 2 ways, for example, as 53085796 + 15007876 = 7286^2 + 3874^2 .

It is an unprimeable number.

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, 7829 + ... + 14052.

Almost surely, 268093672 is an apocalyptic number.

It is an amenable number.

68093672 is a deficient number, since it is larger than the sum of its proper divisors (59916028).

68093672 is a wasteful number, since it uses less digits than its factorization.

68093672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22276 (or 22272 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 68093672 is about 8251.8889958603. Note that the first 3 decimals coincide. The cubic root of 68093672 is about 408.3528441971.

The spelling of 68093672 in words is "sixty-eight million, ninety-three thousand, six hundred seventy-two".

Divisors: 1 2 4 8 389 778 1556 3112 21881 43762 87524 175048 8511709 17023418 34046836 68093672