86344520 has 32 divisors (see below), whose sum is σ = 197017920. Its totient is φ = 34050240.

The previous prime is 86344519. The next prime is 86344537. The reversal of 86344520 is 2544368.

It is a super-2 number, since 2×86344520² = 14910752268060800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12362 + ... + 18041.

It is an arithmetic number, because the mean of its divisors is an integer number (6156810).

Almost surely, 2^86344520 is an apocalyptic number.

It is an amenable number.

86344520 is an abundant number, since it is smaller than the sum of its proper divisors (110673400).

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

86344520 is a wasteful number, since it uses less digits than its factorization.

86344520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30485 (or 30481 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 86344520 is about 9292.1752028252. The cubic root of 86344520 is about 441.9891345445.

Adding to 86344520 its reverse (2544368), we get a palindrome (88888888).

The spelling of 86344520 in words is "eighty-six million, three hundred forty-four thousand, five hundred twenty".