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85885880 = 2353758031
BaseRepresentation
bin1010001111010…
…00001110111000
312222121110021112
411013220032320
5133441322010
612304455452
72062006103
oct507501670
9188543245
1085885880
1144531373
122491a588
1314a41462
14b59973a
157817a05
hex51e83b8

85885880 has 32 divisors (see below), whose sum is σ = 198469440. Its totient is φ = 33425280.

The previous prime is 85885847. The next prime is 85885883. The reversal of 85885880 is 8858858.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85885883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27536 + ... + 30495.

It is an arithmetic number, because the mean of its divisors is an integer number (6202170).

Almost surely, 285885880 is an apocalyptic number.

It is an amenable number.

85885880 is an abundant number, since it is smaller than the sum of its proper divisors (112583560).

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

85885880 is a wasteful number, since it uses less digits than its factorization.

85885880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58079 (or 58075 counting only the distinct ones).

The product of its (nonzero) digits is 819200, while the sum is 50.

The square root of 85885880 is about 9267.4635148999. The cubic root of 85885880 is about 441.2051670885.

The spelling of 85885880 in words is "eighty-five million, eight hundred eighty-five thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 20 37 40 74 148 185 296 370 740 1480 58031 116062 232124 290155 464248 580310 1160620 2147147 2321240 4294294 8588588 10735735 17177176 21471470 42942940 85885880