800320500 has 288 divisors, whose sum is σ = 2995469568. Its totient is φ = 182736000.

The previous prime is 800320487. The next prime is 800320501. The reversal of 800320500 is 5023008.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800320501) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 850030 + ... + 850970.

It is an arithmetic number, because the mean of its divisors is an integer number (10400936).

Almost surely, 2^800320500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 800320500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1497734784).

800320500 is an abundant number, since it is smaller than the sum of its proper divisors (2195149068).

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

800320500 is a wasteful number, since it uses less digits than its factorization.

800320500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 800320500 is about 28289.9363732052. The cubic root of 800320500 is about 928.4417192730.

Adding to 800320500 its reverse (5023008), we get a palindrome (805343508).

The spelling of 800320500 in words is "eight hundred million, three hundred twenty thousand, five hundred".