800120800 has 36 divisors (see below), whose sum is σ = 1953296856. Its totient is φ = 320048000.

The previous prime is 800120791. The next prime is 800120801. The reversal of 800120800 is 8021008.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800120801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 499276 + ... + 500875.

It is an arithmetic number, because the mean of its divisors is an integer number (54258246).

Almost surely, 2^800120800 is an apocalyptic number.

800120800 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

800120800 is an abundant number, since it is smaller than the sum of its proper divisors (1153176056).

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

800120800 is a wasteful number, since it uses less digits than its factorization.

800120800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000171 (or 1000158 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 800120800 is about 28286.4066293335. The cubic root of 800120800 is about 928.3644896985.

Adding to 800120800 its reverse (8021008), we get a palindrome (808141808).

The spelling of 800120800 in words is "eight hundred million, one hundred twenty thousand, eight hundred".