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68116144 = 2417214731
BaseRepresentation
bin1000000111101…
…01111010110000
311202011122210011
410003311322300
5114414204034
610431544304
71454656225
oct403657260
9152148704
1068116144
11354a4738
121a98b094
131115c215
14909194c
155ea7864
hex40f5eb0

68116144 has 30 divisors (see below), whose sum is σ = 140204444. Its totient is φ = 32052480.

The previous prime is 68116079. The next prime is 68116163. The reversal of 68116144 is 44161186.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2742 + ... + 11989.

Almost surely, 268116144 is an apocalyptic number.

It is an amenable number.

68116144 is an abundant number, since it is smaller than the sum of its proper divisors (72088300).

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

68116144 is a wasteful number, since it uses less digits than its factorization.

68116144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14773 (or 14750 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 68116144 is about 8253.2505111623. The cubic root of 68116144 is about 408.3977602447.

The spelling of 68116144 in words is "sixty-eight million, one hundred sixteen thousand, one hundred forty-four".

Divisors: 1 2 4 8 16 17 34 68 136 272 289 578 1156 2312 4624 14731 29462 58924 117848 235696 250427 500854 1001708 2003416 4006832 4257259 8514518 17029036 34058072 68116144