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68125900 = 2252681259
BaseRepresentation
bin1000000111110…
…00010011001100
311202012011011111
410003320103030
5114420012100
610432101404
71455026533
oct403702314
9152164144
1068125900
1135500aa7
121a994864
13111637ab
14909531a
155eaa6ba
hex40f84cc

68125900 has 18 divisors (see below), whose sum is σ = 147833420. Its totient is φ = 27250320.

The previous prime is 68125891. The next prime is 68125909. The reversal of 68125900 is 952186.

It is an interprime number because it is at equal distance from previous prime (68125891) and next prime (68125909).

It is a super-2 number, since 2×681259002 = 9282276501620000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68125909) 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 5 ways as a sum of consecutive naturals, for example, 340530 + ... + 340729.

Almost surely, 268125900 is an apocalyptic number.

It is an amenable number.

68125900 is an abundant number, since it is smaller than the sum of its proper divisors (79707520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68125900 is a wasteful number, since it uses less digits than its factorization.

68125900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681273 (or 681266 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 68125900 is about 8253.8415298575. The cubic root of 68125900 is about 408.4172570341.

The spelling of 68125900 in words is "sixty-eight million, one hundred twenty-five thousand, nine hundred".

Divisors: 1 2 4 5 10 20 25 50 100 681259 1362518 2725036 3406295 6812590 13625180 17031475 34062950 68125900