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68212230 = 2352299929
BaseRepresentation
bin1000001000011…
…01011000000110
311202100112120220
410010031120012
5114430242410
610434005210
71455536322
oct404153006
9152315526
1068212230
113555a949
121aa16806
1311193b88
1490b8982
155ec6070
hex410d606

68212230 has 32 divisors (see below), whose sum is σ = 164440800. Its totient is φ = 18108672.

The previous prime is 68212217. The next prime is 68212237. The reversal of 68212230 is 3221286.

It is a self number, because there is not a number n which added to its sum of digits gives 68212230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68212237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1906 + ... + 11834.

It is an arithmetic number, because the mean of its divisors is an integer number (5138775).

Almost surely, 268212230 is an apocalyptic number.

68212230 is an abundant number, since it is smaller than the sum of its proper divisors (96228570).

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

68212230 is a wasteful number, since it uses less digits than its factorization.

68212230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10168.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 68212230 is about 8259.0695601865. The cubic root of 68212230 is about 408.5897013803.

The spelling of 68212230 in words is "sixty-eight million, two hundred twelve thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 229 458 687 1145 1374 2290 3435 6870 9929 19858 29787 49645 59574 99290 148935 297870 2273741 4547482 6821223 11368705 13642446 22737410 34106115 68212230