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68968800 = 25335231103
BaseRepresentation
bin1000001110001…
…10000101100000
311210202222102000
410013012011200
5120124000200
610502124000
71465140135
oct407060540
9153688360
1068968800
1135a2730a
121b120600
131139a354
14923458c
1560c5300
hex41c6160

68968800 has 288 divisors, whose sum is σ = 259983360. Its totient is φ = 17625600.

The previous prime is 68968799. The next prime is 68968811. The reversal of 68968800 is 886986.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 669549 + ... + 669651.

It is an arithmetic number, because the mean of its divisors is an integer number (902720).

Almost surely, 268968800 is an apocalyptic number.

68968800 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68968800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129991680).

68968800 is an abundant number, since it is smaller than the sum of its proper divisors (191014560).

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

68968800 is a wasteful number, since it uses less digits than its factorization.

68968800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 68968800 is about 8304.7456312641. The cubic root of 68968800 is about 410.0947629461.

The spelling of 68968800 in words is "sixty-eight million, nine hundred sixty-eight thousand, eight hundred".