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80588880 = 243251943137
BaseRepresentation
bin1001100110110…
…11000001010000
312121122100011100
410303123001100
5131112321010
611555144400
71665665001
oct463330120
9177570140
1080588880
1141543689
1222ba5100
1313908438
14a9bb1a8
15711d2c0
hex4cdb050

80588880 has 240 divisors, whose sum is σ = 293641920. Its totient is φ = 19740672.

The previous prime is 80588839. The next prime is 80588909. The reversal of 80588880 is 8888508.

It is a tau number, because it is divible by the number of its divisors (240).

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 588172 + ... + 588308.

It is an arithmetic number, because the mean of its divisors is an integer number (1223508).

Almost surely, 280588880 is an apocalyptic number.

80588880 is a gapful number since it is divisible by the number (80) 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 80588880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146820960).

80588880 is an abundant number, since it is smaller than the sum of its proper divisors (213053040).

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

80588880 is a wasteful number, since it uses less digits than its factorization.

80588880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 45.

The square root of 80588880 is about 8977.1309447952. The cubic root of 80588880 is about 431.9416073339.

The spelling of 80588880 in words is "eighty million, five hundred eighty-eight thousand, eight hundred eighty".