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80050000 = 24551601
BaseRepresentation
bin1001100010101…
…11011101010000
312120121221221211
410301113131100
5130443100000
611535425504
71661261632
oct461273520
9176557854
1080050000
1141205828
1222985294
131377a084
14a8baa52
1570637ba
hex4c57750

80050000 has 60 divisors (see below), whose sum is σ = 193979772. Its totient is φ = 32000000.

The previous prime is 80049997. The next prime is 80050013. The reversal of 80050000 is 5008.

It can be written as a sum of positive squares in 6 ways, for example, as 38987536 + 41062464 = 6244^2 + 6408^2 .

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 49200 + ... + 50800.

Almost surely, 280050000 is an apocalyptic number.

80050000 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 80050000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96989886).

80050000 is an abundant number, since it is smaller than the sum of its proper divisors (113929772).

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

80050000 is an equidigital number, since it uses as much as digits as its factorization.

80050000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634 (or 1608 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 80050000 is about 8947.0665583754. The cubic root of 80050000 is about 430.9766874233.

Adding to 80050000 its reverse (5008), we get a palindrome (80055008).

The spelling of 80050000 in words is "eighty million, fifty thousand".

Divisors: 1 2 4 5 8 10 16 20 25 40 50 80 100 125 200 250 400 500 625 1000 1250 1601 2000 2500 3125 3202 5000 6250 6404 8005 10000 12500 12808 16010 25000 25616 32020 40025 50000 64040 80050 128080 160100 200125 320200 400250 640400 800500 1000625 1601000 2001250 3202000 4002500 5003125 8005000 10006250 16010000 20012500 40025000 80050000