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68506450 = 25213110459
BaseRepresentation
bin1000001010101…
…01001101010010
311202220111011221
410011111031102
5120014201300
610444155254
71461203155
oct405251522
9152814157
1068506450
1135740a01
121ab38b2a
1311267a7c
149153c9c
15603331a
hex4155352

68506450 has 24 divisors (see below), whose sum is σ = 128406960. Its totient is φ = 27190800.

The previous prime is 68506441. The next prime is 68506453. The reversal of 68506450 is 5460586.

It is not an unprimeable number, because it can be changed into a prime (68506453) 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 11 ways as a sum of consecutive naturals, for example, 1321 + ... + 11779.

It is an arithmetic number, because the mean of its divisors is an integer number (5350290).

Almost surely, 268506450 is an apocalyptic number.

68506450 is a deficient number, since it is larger than the sum of its proper divisors (59900510).

68506450 is a wasteful number, since it uses less digits than its factorization.

68506450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10602 (or 10597 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 68506450 is about 8276.8623282014. The cubic root of 68506450 is about 409.1763158009.

The spelling of 68506450 in words is "sixty-eight million, five hundred six thousand, four hundred fifty".

Divisors: 1 2 5 10 25 50 131 262 655 1310 3275 6550 10459 20918 52295 104590 261475 522950 1370129 2740258 6850645 13701290 34253225 68506450