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80016500 = 2253160033
BaseRepresentation
bin1001100010011…
…11010001110100
312120120021000002
410301033101310
5130441012000
611535010432
71661062154
oct461172164
9176507002
1080016500
1141192643
1222969a18
1313767a55
14a8ac764
1570588d5
hex4c4f474

80016500 has 24 divisors (see below), whose sum is σ = 174757128. Its totient is φ = 32006400.

The previous prime is 80016491. The next prime is 80016511. The reversal of 80016500 is 561008.

Adding to 80016500 its reverse (561008), we get a palindrome (80577508).

It can be written as a sum of positive squares in 4 ways, for example, as 22165264 + 57851236 = 4708^2 + 7606^2 .

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 7 ways as a sum of consecutive naturals, for example, 79517 + ... + 80516.

It is an arithmetic number, because the mean of its divisors is an integer number (7281547).

Almost surely, 280016500 is an apocalyptic number.

It is an amenable number.

80016500 is an abundant number, since it is smaller than the sum of its proper divisors (94740628).

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

80016500 is a wasteful number, since it uses less digits than its factorization.

80016500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160052 (or 160040 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 80016500 is about 8945.1942404847. The cubic root of 80016500 is about 430.9165594470.

The spelling of 80016500 in words is "eighty million, sixteen thousand, five hundred".

Divisors: 1 2 4 5 10 20 25 50 100 125 250 500 160033 320066 640132 800165 1600330 3200660 4000825 8001650 16003300 20004125 40008250 80016500