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68126456 = 2319942793
BaseRepresentation
bin1000000111110…
…00011011111000
311202012011221002
410003320123320
5114420021311
610432104132
71455031256
oct403703370
9152164832
1068126456
1135501462
121a995048
1311163b18
1490955d6
155eaa93b
hex40f86f8

68126456 has 16 divisors (see below), whose sum is σ = 128382000. Its totient is φ = 33891264.

The previous prime is 68126441. The next prime is 68126473. The reversal of 68126456 is 65462186.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 19805 + ... + 22988.

It is an arithmetic number, because the mean of its divisors is an integer number (8023875).

Almost surely, 268126456 is an apocalyptic number.

It is an amenable number.

68126456 is a deficient number, since it is larger than the sum of its proper divisors (60255544).

68126456 is a wasteful number, since it uses less digits than its factorization.

68126456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42998 (or 42994 counting only the distinct ones).

The product of its digits is 69120, while the sum is 38.

The square root of 68126456 is about 8253.8752110751. The cubic root of 68126456 is about 408.4183681111.

The spelling of 68126456 in words is "sixty-eight million, one hundred twenty-six thousand, four hundred fifty-six".

Divisors: 1 2 4 8 199 398 796 1592 42793 85586 171172 342344 8515807 17031614 34063228 68126456