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68590580 = 22517673011
BaseRepresentation
bin1000001011010…
…01101111110100
311210001202120212
410011221233310
5120024344310
610450044552
71462003352
oct405515764
9153052525
1068590580
1135799133
121ab79758
1311297156
1491767d2
15604d205
hex4169bf4

68590580 has 48 divisors (see below), whose sum is σ = 154840896. Its totient is φ = 25428480.

The previous prime is 68590573. The next prime is 68590591. The reversal of 68590580 is 8509586.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21275 + ... + 24285.

It is an arithmetic number, because the mean of its divisors is an integer number (3225852).

Almost surely, 268590580 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 68590580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77420448).

68590580 is an abundant number, since it is smaller than the sum of its proper divisors (86250316).

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

68590580 is a wasteful number, since it uses less digits than its factorization.

68590580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3104 (or 3102 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 68590580 is about 8281.9430087390. The cubic root of 68590580 is about 409.3437449090.

The spelling of 68590580 in words is "sixty-eight million, five hundred ninety thousand, five hundred eighty".

Divisors: 1 2 4 5 10 17 20 34 67 68 85 134 170 268 335 340 670 1139 1340 2278 3011 4556 5695 6022 11390 12044 15055 22780 30110 51187 60220 102374 201737 204748 255935 403474 511870 806948 1008685 1023740 2017370 3429529 4034740 6859058 13718116 17147645 34295290 68590580