806522128 has 10 divisors (see below), whose sum is σ = 1562636654. Its totient is φ = 403261056.

The previous prime is 806522107. The next prime is 806522149. The reversal of 806522128 is 821225608.

It is an interprime number because it is at equal distance from previous prime (806522107) and next prime (806522149).

It can be written as a sum of positive squares in only one way, i.e., 635644944 + 170877184 = 25212^2 + 13072^2 .

It is a junction number, because it is equal to n+sod(n) for n = 806522093 and 806522102.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25203801 + ... + 25203832.

Almost surely, 2^806522128 is an apocalyptic number.

It is an amenable number.

806522128 is a deficient number, since it is larger than the sum of its proper divisors (756114526).

806522128 is a wasteful number, since it uses less digits than its factorization.

806522128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50407641 (or 50407635 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 806522128 is about 28399.3332316095. Note that the first 3 decimals coincide. The cubic root of 806522128 is about 930.8336949315.

The spelling of 806522128 in words is "eight hundred six million, five hundred twenty-two thousand, one hundred twenty-eight".