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68118284 = 22133142257
BaseRepresentation
bin1000000111101…
…10011100001100
311202011202201102
410003312130030
5114414241114
610432002232
71454665403
oct403663414
9152152642
1068118284
11354a6303
121a990378
13111601a0
14909263a
155ea82de
hex40f670c

68118284 has 24 divisors (see below), whose sum is σ = 132521088. Its totient is φ = 30424320.

The previous prime is 68118283. The next prime is 68118293. The reversal of 68118284 is 48281186.

It is not an unprimeable number, because it can be changed into a prime (68118283) 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, 19517 + ... + 22740.

It is an arithmetic number, because the mean of its divisors is an integer number (5521712).

Almost surely, 268118284 is an apocalyptic number.

It is an amenable number.

68118284 is a deficient number, since it is larger than the sum of its proper divisors (64402804).

68118284 is a wasteful number, since it uses less digits than its factorization.

68118284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42305 (or 42303 counting only the distinct ones).

The product of its digits is 24576, while the sum is 38.

The square root of 68118284 is about 8253.3801560330. The cubic root of 68118284 is about 408.4020370676.

The spelling of 68118284 in words is "sixty-eight million, one hundred eighteen thousand, two hundred eighty-four".

Divisors: 1 2 4 13 26 31 52 62 124 403 806 1612 42257 84514 169028 549341 1098682 1309967 2197364 2619934 5239868 17029571 34059142 68118284