86512020 has 48 divisors (see below), whose sum is σ = 276839808. Its totient is φ = 19774080.

The previous prime is 86512003. The next prime is 86512061. The reversal of 86512020 is 2021568.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102571 + ... + 103410.

It is an arithmetic number, because the mean of its divisors is an integer number (5767496).

Almost surely, 2^86512020 is an apocalyptic number.

It is an amenable number.

86512020 is an abundant number, since it is smaller than the sum of its proper divisors (190327788).

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

86512020 is a wasteful number, since it uses less digits than its factorization.

86512020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206000 (or 205998 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 86512020 is about 9301.1837956252. The cubic root of 86512020 is about 442.2747552925.

Adding to 86512020 its reverse (2021568), we get a palindrome (88533588).

The spelling of 86512020 in words is "eighty-six million, five hundred twelve thousand, twenty".