86108720 has 20 divisors (see below), whose sum is σ = 200202960. Its totient is φ = 34443456.

The previous prime is 86108719. The next prime is 86108749. The reversal of 86108720 is 2780168.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 538100 + ... + 538259.

It is an arithmetic number, because the mean of its divisors is an integer number (10010148).

Almost surely, 2^86108720 is an apocalyptic number.

86108720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

86108720 is an abundant number, since it is smaller than the sum of its proper divisors (114094240).

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

86108720 is a wasteful number, since it uses less digits than its factorization.

86108720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076372 (or 1076366 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 86108720 is about 9279.4784336190. The cubic root of 86108720 is about 441.5864220340.

Adding to 86108720 its reverse (2780168), we get a palindrome (88888888).

The spelling of 86108720 in words is "eighty-six million, one hundred eight thousand, seven hundred twenty".