800361820 has 48 divisors (see below), whose sum is σ = 1796655168. Its totient is φ = 298749440.

The previous prime is 800361817. The next prime is 800361827. The reversal of 800361820 is 28163008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800361827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2359 + ... + 40078.

It is an arithmetic number, because the mean of its divisors is an integer number (37430316).

Almost surely, 2^800361820 is an apocalyptic number.

It is an amenable number.

800361820 is an abundant number, since it is smaller than the sum of its proper divisors (996293348).

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

800361820 is a wasteful number, since it uses less digits than its factorization.

800361820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42510 (or 42508 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 800361820 is about 28290.6666588117. Note that the first 4 decimals coincide. The cubic root of 800361820 is about 928.4576972683.

The spelling of 800361820 in words is "eight hundred million, three hundred sixty-one thousand, eight hundred twenty".