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68807750 = 25311131191
BaseRepresentation
bin1000001100111…
…10110001000110
311210110210111012
410012132301012
5120103322000
610454442222
71463566454
oct406366106
9153423435
1068807750
1135927310
121b063372
1311341c5b
1491d19d4
156092735
hex419ec46

68807750 has 64 divisors (see below), whose sum is σ = 142331904. Its totient is φ = 24700000.

The previous prime is 68807737. The next prime is 68807777. The reversal of 68807750 is 5770886.

It is a junction number, because it is equal to n+sod(n) for n = 68807698 and 68807707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 360155 + ... + 360345.

It is an arithmetic number, because the mean of its divisors is an integer number (2223936).

Almost surely, 268807750 is an apocalyptic number.

68807750 is an abundant number, since it is smaller than the sum of its proper divisors (73524154).

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

68807750 is a wasteful number, since it uses less digits than its factorization.

68807750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 41.

The square root of 68807750 is about 8295.0437009096. The cubic root of 68807750 is about 409.7753081758.

The spelling of 68807750 in words is "sixty-eight million, eight hundred seven thousand, seven hundred fifty".

Divisors: 1 2 5 10 11 22 25 50 55 110 125 131 191 250 262 275 382 550 655 955 1310 1375 1441 1910 2101 2750 2882 3275 4202 4775 6550 7205 9550 10505 14410 16375 21010 23875 25021 32750 36025 47750 50042 52525 72050 105050 125105 180125 250210 262625 275231 360250 525250 550462 625525 1251050 1376155 2752310 3127625 6255250 6880775 13761550 34403875 68807750