80530000 has 50 divisors (see below), whose sum is σ = 194995394. Its totient is φ = 32208000.

The previous prime is 80529997. The next prime is 80530007. The reversal of 80530000 is 3508.

It can be written as a sum of positive squares in 5 ways, for example, as 20684304 + 59845696 = 4548^2 + 7736^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80530007) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 5974 + ... + 14026.

Almost surely, 2^80530000 is an apocalyptic number.

80530000 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 80530000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97497697).

80530000 is an abundant number, since it is smaller than the sum of its proper divisors (114465394).

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

80530000 is an equidigital number, since it uses as much as digits as its factorization.

80530000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8081 (or 8060 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 80530000 is about 8973.8509013689. The cubic root of 80530000 is about 431.8363863726.

Adding to 80530000 its reverse (3508), we get a palindrome (80533508).

The spelling of 80530000 in words is "eighty million, five hundred thirty thousand".