86309220 has 48 divisors (see below), whose sum is σ = 250004160. Its totient is φ = 22221696.

The previous prime is 86309207. The next prime is 86309231. The reversal of 86309220 is 2290368.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23062 + ... + 26541.

It is an arithmetic number, because the mean of its divisors is an integer number (5208420).

Almost surely, 2^86309220 is an apocalyptic number.

It is an amenable number.

86309220 is an abundant number, since it is smaller than the sum of its proper divisors (163694940).

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

86309220 is a wasteful number, since it uses less digits than its factorization.

86309220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49644 (or 49642 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 86309220 is about 9290.2755610369. The cubic root of 86309220 is about 441.9288939211.

Adding to 86309220 its reverse (2290368), we get a palindrome (88599588).

The spelling of 86309220 in words is "eighty-six million, three hundred nine thousand, two hundred twenty".