805000100 has 18 divisors (see below), whose sum is σ = 1746850434. Its totient is φ = 322000000.

The previous prime is 805000087. The next prime is 805000111. The reversal of 805000100 is 1000508.

It can be written as a sum of positive squares in 3 ways, for example, as 10549504 + 794450596 = 3248^2 + 28186^2 .

It is a super-2 number, since 2×805000100² = 1296050322000020000, which contains 22 as substring.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 4024901 + ... + 4025100.

Almost surely, 2^805000100 is an apocalyptic number.

It is an amenable number.

805000100 is an abundant number, since it is smaller than the sum of its proper divisors (941850334).

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

805000100 is a wasteful number, since it uses less digits than its factorization.

805000100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8050015 (or 8050008 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 805000100 is about 28372.5236804906. The cubic root of 805000100 is about 930.2477853646.

Adding to 805000100 its reverse (1000508), we get a palindrome (806000608).

The spelling of 805000100 in words is "eight hundred five million, one hundred", and thus it is an aban number.