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68197210 = 25311791229
BaseRepresentation
bin1000001000010…
…01101101011010
311202022202222121
410010021231122
5114424302320
610433411454
71455444454
oct404115532
9152282877
1068197210
113554a634
121aa09b8a
131118a0a3
1490b32d4
155ec18aa
hex4109b5a

68197210 has 32 divisors (see below), whose sum is σ = 127526400. Its totient is φ = 26230080.

The previous prime is 68197201. The next prime is 68197211. The reversal of 68197210 is 1279186.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68197211) 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 15 ways as a sum of consecutive naturals, for example, 54876 + ... + 56104.

It is an arithmetic number, because the mean of its divisors is an integer number (3985200).

Almost surely, 268197210 is an apocalyptic number.

68197210 is a deficient number, since it is larger than the sum of its proper divisors (59329190).

68197210 is a wasteful number, since it uses less digits than its factorization.

68197210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 68197210 is about 8258.1602067289. The cubic root of 68197210 is about 408.5597093598.

The spelling of 68197210 in words is "sixty-eight million, one hundred ninety-seven thousand, two hundred ten".

Divisors: 1 2 5 10 31 62 155 179 310 358 895 1229 1790 2458 5549 6145 11098 12290 27745 38099 55490 76198 190495 219991 380990 439982 1099955 2199910 6819721 13639442 34098605 68197210