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68744808 = 23331128933
BaseRepresentation
bin1000001100011…
…11011001101000
311210100121011000
410012033121220
5120044313213
610453235000
71463215116
oct406173150
9153317130
1068744808
1135893aa0
121b032a60
131131c402
1491b6ab6
15607dc73
hex418f668

68744808 has 64 divisors (see below), whose sum is σ = 208324800. Its totient is φ = 20831040.

The previous prime is 68744801. The next prime is 68744849. The reversal of 68744808 is 80844786.

It is not an unprimeable number, because it can be changed into a prime (68744801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12091 + ... + 16842.

It is an arithmetic number, because the mean of its divisors is an integer number (3255075).

Almost surely, 268744808 is an apocalyptic number.

It is an amenable number.

68744808 is an abundant number, since it is smaller than the sum of its proper divisors (139579992).

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

68744808 is a wasteful number, since it uses less digits than its factorization.

68744808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28959 (or 28949 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The square root of 68744808 is about 8291.2488805969. The cubic root of 68744808 is about 409.6503225170.

The spelling of 68744808 in words is "sixty-eight million, seven hundred forty-four thousand, eight hundred eight".

Divisors: 1 2 3 4 6 8 9 11 12 18 22 24 27 33 36 44 54 66 72 88 99 108 132 198 216 264 297 396 594 792 1188 2376 28933 57866 86799 115732 173598 231464 260397 318263 347196 520794 636526 694392 781191 954789 1041588 1273052 1562382 1909578 2083176 2546104 2864367 3124764 3819156 5728734 6249528 7638312 8593101 11457468 17186202 22914936 34372404 68744808