86031808 has 56 divisors (see below), whose sum is σ = 179295552. Its totient is φ = 40909824.

The previous prime is 86031793. The next prime is 86031809. The reversal of 86031808 is 80813068.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86031809) 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, 110910 + ... + 111682.

Almost surely, 2^86031808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86031808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89647776).

86031808 is an abundant number, since it is smaller than the sum of its proper divisors (93263744).

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

86031808 is a wasteful number, since it uses less digits than its factorization.

86031808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869 (or 859 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 86031808 is about 9275.3333093749. Note that the first 4 decimals coincide. The cubic root of 86031808 is about 441.4549084007.

The spelling of 86031808 in words is "eighty-six million, thirty-one thousand, eight hundred eight".