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80200080 = 243252329167
BaseRepresentation
bin1001100011111…
…00000110010000
312120220120211100
410301330012100
5131012400310
611542544400
71662455322
oct461740620
9176816740
1080200080
11412a8564
1222a38100
131380048c
14a919612
157092ec0
hex4c7c190

80200080 has 240 divisors, whose sum is σ = 292481280. Its totient is φ = 19633152.

The previous prime is 80200061. The next prime is 80200091. The reversal of 80200080 is 8000208.

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 (18).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

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, 480157 + ... + 480323.

It is an arithmetic number, because the mean of its divisors is an integer number (1218672).

Almost surely, 280200080 is an apocalyptic number.

80200080 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 80200080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146240640).

80200080 is an abundant number, since it is smaller than the sum of its proper divisors (212281200).

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

80200080 is a wasteful number, since it uses less digits than its factorization.

80200080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 80200080 is about 8955.4497374504. The cubic root of 80200080 is about 431.2458550326.

Adding to 80200080 its product of nonzero digits (128), we get a palindrome (80200208).

Adding to 80200080 its reverse (8000208), we get a palindrome (88200288).

The spelling of 80200080 in words is "eighty million, two hundred thousand, eighty".