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68086770 = 23518112539
BaseRepresentation
bin1000000111011…
…10101111110010
311202010011111020
410003232233302
5114412234040
610431200310
71454504463
oct403565762
9152104436
1068086770
1135484664
121a976096
131114ba3b
149084d6a
155e9dcd0
hex40eebf2

68086770 has 32 divisors (see below), whose sum is σ = 164324160. Its totient is φ = 18054720.

The previous prime is 68086763. The next prime is 68086783. The reversal of 68086770 is 7768086.

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, 840 + ... + 11699.

It is an arithmetic number, because the mean of its divisors is an integer number (5135130).

Almost surely, 268086770 is an apocalyptic number.

68086770 is an abundant number, since it is smaller than the sum of its proper divisors (96237390).

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

68086770 is a wasteful number, since it uses less digits than its factorization.

68086770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12730.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 68086770 is about 8251.4707779886. The cubic root of 68086770 is about 408.3390467987.

The spelling of 68086770 in words is "sixty-eight million, eighty-six thousand, seven hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 181 362 543 905 1086 1810 2715 5430 12539 25078 37617 62695 75234 125390 188085 376170 2269559 4539118 6808677 11347795 13617354 22695590 34043385 68086770