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68884000 = 2553171013
BaseRepresentation
bin1000001101100…
…01011000100000
311210121200002021
410012301120200
5120113242000
610500231224
71464334663
oct406613040
9153550067
1068884000
1135979629
121b09b514
131136a883
1492116da
1560aa11a
hex41b1620

68884000 has 96 divisors (see below), whose sum is σ = 179380656. Its totient is φ = 25907200.

The previous prime is 68883943. The next prime is 68884001. The reversal of 68884000 is 48886.

It can be written as a sum of positive squares in 8 ways, for example, as 126736 + 68757264 = 356^2 + 8292^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (68884001) 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, 67494 + ... + 68506.

Almost surely, 268884000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68884000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89690328).

68884000 is an abundant number, since it is smaller than the sum of its proper divisors (110496656).

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

68884000 is a wasteful number, since it uses less digits than its factorization.

68884000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055 (or 1037 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 68884000 is about 8299.6385463465. The cubic root of 68884000 is about 409.9266178404.

The spelling of 68884000 in words is "sixty-eight million, eight hundred eighty-four thousand".

Divisors: 1 2 4 5 8 10 16 17 20 25 32 34 40 50 68 80 85 100 125 136 160 170 200 250 272 340 400 425 500 544 680 800 850 1000 1013 1360 1700 2000 2026 2125 2720 3400 4000 4052 4250 5065 6800 8104 8500 10130 13600 16208 17000 17221 20260 25325 32416 34000 34442 40520 50650 68000 68884 81040 86105 101300 126625 137768 162080 172210 202600 253250 275536 344420 405200 430525 506500 551072 688840 810400 861050 1013000 1377680 1722100 2026000 2152625 2755360 3444200 4052000 4305250 6888400 8610500 13776800 17221000 34442000 68884000