86278856 has 8 divisors (see below), whose sum is σ = 161772870. Its totient is φ = 43139424.

The previous prime is 86278849. The next prime is 86278861. The reversal of 86278856 is 65887268.

It can be written as a sum of positive squares in only one way, i.e., 78605956 + 7672900 = 8866^2 + 2770^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5392421 + ... + 5392436.

Almost surely, 2^86278856 is an apocalyptic number.

It is an amenable number.

86278856 is a deficient number, since it is larger than the sum of its proper divisors (75494014).

86278856 is a wasteful number, since it uses less digits than its factorization.

86278856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10784863 (or 10784859 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 50.

The square root of 86278856 is about 9288.6412354014. The cubic root of 86278856 is about 441.8770636036.

The spelling of 86278856 in words is "eighty-six million, two hundred seventy-eight thousand, eight hundred fifty-six".