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68914288 = 24137149211
BaseRepresentation
bin1000001101110…
…00110001110000
311210200012122001
410012320301300
5120120224123
610501023344
71464522202
oct406706160
9153605561
1068914288
113599a363
121b0b4b54
131137b5b1
14921c772
1560b40ad
hex41b8c70

68914288 has 40 divisors (see below), whose sum is σ = 136040400. Its totient is φ = 33815040.

The previous prime is 68914259. The next prime is 68914291. The reversal of 68914288 is 88241986.

It is a congruent number.

It is an unprimeable number.

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, 326503 + ... + 326713.

It is an arithmetic number, because the mean of its divisors is an integer number (3401010).

Almost surely, 268914288 is an apocalyptic number.

It is an amenable number.

68914288 is a deficient number, since it is larger than the sum of its proper divisors (67126112).

68914288 is a wasteful number, since it uses less digits than its factorization.

68914288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505 (or 499 counting only the distinct ones).

The product of its digits is 221184, while the sum is 46.

The square root of 68914288 is about 8301.4630035916. The cubic root of 68914288 is about 409.9866900299.

The spelling of 68914288 in words is "sixty-eight million, nine hundred fourteen thousand, two hundred eighty-eight".

Divisors: 1 2 4 8 16 137 149 211 274 298 422 548 596 844 1096 1192 1688 2192 2384 3376 20413 28907 31439 40826 57814 62878 81652 115628 125756 163304 231256 251512 326608 462512 503024 4307143 8614286 17228572 34457144 68914288