86506228 has 24 divisors (see below), whose sum is σ = 156025800. Its totient is φ = 41940480.

The previous prime is 86506207. The next prime is 86506237. The reversal of 86506228 is 82260568.

It can be written as a sum of positive squares in 4 ways, for example, as 1350244 + 85155984 = 1162^2 + 9228^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 26848 + ... + 29896.

It is an arithmetic number, because the mean of its divisors is an integer number (6501075).

Almost surely, 2^86506228 is an apocalyptic number.

It is an amenable number.

86506228 is a deficient number, since it is larger than the sum of its proper divisors (69519572).

86506228 is a wasteful number, since it uses less digits than its factorization.

86506228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3267 (or 3265 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 86506228 is about 9300.8724321969. The cubic root of 86506228 is about 442.2648849394.

It can be divided in two parts, 8650 and 6228, that added together give a triangular number (14878 = T₁₇₂).

The spelling of 86506228 in words is "eighty-six million, five hundred six thousand, two hundred twenty-eight".