805628136 has 32 divisors (see below), whose sum is σ = 2015056800. Its totient is φ = 268411200.

The previous prime is 805628119. The next prime is 805628137. The reversal of 805628136 is 631826508.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 805628094 and 805628103.

It is not an unprimeable number, because it can be changed into a prime (805628137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50311 + ... + 64361.

It is an arithmetic number, because the mean of its divisors is an integer number (62970525).

Almost surely, 2^805628136 is an apocalyptic number.

It is an amenable number.

805628136 is an abundant number, since it is smaller than the sum of its proper divisors (1209428664).

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

805628136 is a wasteful number, since it uses less digits than its factorization.

805628136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16449 (or 16445 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 805628136 is about 28383.5892022133. The cubic root of 805628136 is about 930.4896392606.

The spelling of 805628136 in words is "eight hundred five million, six hundred twenty-eight thousand, one hundred thirty-six".