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68290351 = 197874567
BaseRepresentation
bin1000001001000…
…00011100101111
311202111111202021
410010200130233
5114440242401
610435411011
71456313143
oct404403457
9152444667
1068290351
1135603608
121aa53a67
13111c05bc
1490d9223
155ede2a1
hex412072f

68290351 has 8 divisors (see below), whose sum is σ = 71991680. Its totient is φ = 64599768.

The previous prime is 68290349. The next prime is 68290357. The reversal of 68290351 is 15309286.

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

It is a cyclic number.

It is not a de Polignac number, because 68290351 - 21 = 68290349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68290357) 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 7 ways as a sum of consecutive naturals, for example, 12670 + ... + 17236.

It is an arithmetic number, because the mean of its divisors is an integer number (8998960).

Almost surely, 268290351 is an apocalyptic number.

68290351 is a deficient number, since it is larger than the sum of its proper divisors (3701329).

68290351 is a wasteful number, since it uses less digits than its factorization.

68290351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5373.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 68290351 is about 8263.7976136883. The cubic root of 68290351 is about 408.7456228743.

The spelling of 68290351 in words is "sixty-eight million, two hundred ninety thousand, three hundred fifty-one".

Divisors: 1 19 787 4567 14953 86773 3594229 68290351