800920 has 16 divisors (see below), whose sum is σ = 1802160. Its totient is φ = 320352.

The previous prime is 800909. The next prime is 800923. The reversal of 800920 is 29008.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9972 + ... + 10051.

It is an arithmetic number, because the mean of its divisors is an integer number (112635).

2⁸⁰⁰⁹²⁰ is an apocalyptic number.

It is an amenable number.

800920 is an abundant number, since it is smaller than the sum of its proper divisors (1001240).

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

800920 is a wasteful number, since it uses less digits than its factorization.

800920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20034 (or 20030 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 800920 is about 894.9413388597. The cubic root of 800920 is about 92.8673485542.

Adding to 800920 its reverse (29008), we get a palindrome (829928).

The spelling of 800920 in words is "eight hundred thousand, nine hundred twenty".