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68305030 = 256830503
BaseRepresentation
bin1000001001001…
…00000010000110
311202112020212221
410010210002012
5114441230110
610440002554
71456404013
oct404440206
9152466787
1068305030
1135613642
121aa6045a
13111c71a1
14910070a
155ee37da
hex4124086

68305030 has 8 divisors (see below), whose sum is σ = 122949072. Its totient is φ = 27322008.

The previous prime is 68305021. The next prime is 68305033. The reversal of 68305030 is 3050386.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 68304986 and 68305004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68305033) 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 3 ways as a sum of consecutive naturals, for example, 3415242 + ... + 3415261.

It is an arithmetic number, because the mean of its divisors is an integer number (15368634).

Almost surely, 268305030 is an apocalyptic number.

68305030 is a deficient number, since it is larger than the sum of its proper divisors (54644042).

68305030 is a wasteful number, since it uses less digits than its factorization.

68305030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6830510.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 68305030 is about 8264.6857169526. The cubic root of 68305030 is about 408.7749073782.

The spelling of 68305030 in words is "sixty-eight million, three hundred five thousand, thirty".

Divisors: 1 2 5 10 6830503 13661006 34152515 68305030