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68738285 = 5711216231
BaseRepresentation
bin1000001100011…
…01110011101101
311210100021012102
410012031303231
5120044111120
610453144445
71463160110
oct406156355
9153307172
1068738285
113588a100
121b02b125
1311319455
1491b4577
15607bd75
hex418dced

68738285 has 24 divisors (see below), whose sum is σ = 103625088. Its totient is φ = 42847200.

The previous prime is 68738281. The next prime is 68738291. The reversal of 68738285 is 58283786.

It is not a de Polignac number, because 68738285 - 22 = 68738281 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68738281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3881 + ... + 12350.

It is an arithmetic number, because the mean of its divisors is an integer number (4317712).

Almost surely, 268738285 is an apocalyptic number.

It is an amenable number.

68738285 is a deficient number, since it is larger than the sum of its proper divisors (34886803).

68738285 is a wasteful number, since it uses less digits than its factorization.

68738285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16265 (or 16254 counting only the distinct ones).

The product of its digits is 645120, while the sum is 47.

The square root of 68738285 is about 8290.8555047112. The cubic root of 68738285 is about 409.6373652544.

The spelling of 68738285 in words is "sixty-eight million, seven hundred thirty-eight thousand, two hundred eighty-five".

Divisors: 1 5 7 11 35 55 77 121 385 605 847 4235 16231 81155 113617 178541 568085 892705 1249787 1963951 6248935 9819755 13747657 68738285