800302821 has 16 divisors (see below), whose sum is σ = 1130794560. Its totient is φ = 502570880.

The previous prime is 800302817. The next prime is 800302907. The reversal of 800302821 is 128203008.

It is a cyclic number.

It is not a de Polignac number, because 800302821 - 2² = 800302817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 800302791 and 800302800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800342821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108615 + ... + 115748.

It is an arithmetic number, because the mean of its divisors is an integer number (70674660).

Almost surely, 2^800302821 is an apocalyptic number.

It is an amenable number.

800302821 is a deficient number, since it is larger than the sum of its proper divisors (330491739).

800302821 is a wasteful number, since it uses less digits than its factorization.

800302821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224436.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 800302821 is about 28289.6239105436. The cubic root of 800302821 is about 928.4348828276.

Adding to 800302821 its reverse (128203008), we get a palindrome (928505829).

The spelling of 800302821 in words is "eight hundred million, three hundred two thousand, eight hundred twenty-one".