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68395229 = 73199403
BaseRepresentation
bin1000001001110…
…10000011011101
311202200211121122
410010322003131
5120002121404
610441540325
71460231000
oct404720335
9152624548
1068395229
1135675391
121aaa46a5
1311229266
149125537
1560103be
hex413a0dd

68395229 has 8 divisors (see below), whose sum is σ = 79761600. Its totient is φ = 58624188.

The previous prime is 68395183. The next prime is 68395247. The reversal of 68395229 is 92259386.

It is a de Polignac number, because none of the positive numbers 2k-68395229 is a prime.

It is a super-3 number, since 3×683952293 (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68395229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68395529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99359 + ... + 100044.

It is an arithmetic number, because the mean of its divisors is an integer number (9970200).

Almost surely, 268395229 is an apocalyptic number.

It is an amenable number.

68395229 is a deficient number, since it is larger than the sum of its proper divisors (11366371).

68395229 is an equidigital number, since it uses as much as digits as its factorization.

68395229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199424 (or 199410 counting only the distinct ones).

The product of its digits is 233280, while the sum is 44.

The square root of 68395229 is about 8270.1408089585. The cubic root of 68395229 is about 408.9547617263.

The spelling of 68395229 in words is "sixty-eight million, three hundred ninety-five thousand, two hundred twenty-nine".

Divisors: 1 7 49 343 199403 1395821 9770747 68395229