86504220 has 96 divisors (see below), whose sum is σ = 293610240. Its totient is φ = 20969280.

The previous prime is 86504203. The next prime is 86504227. The reversal of 86504220 is 2240568.

86504220 is a `hidden beast` number, since 8 + 650 + 4 + 2 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86504227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1342 + ... + 13221.

It is an arithmetic number, because the mean of its divisors is an integer number (3058440).

Almost surely, 2^86504220 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 86504220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146805120).

86504220 is an abundant number, since it is smaller than the sum of its proper divisors (207106020).

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

86504220 is a wasteful number, since it uses less digits than its factorization.

86504220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14592 (or 14584 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 86504220 is about 9300.7644847077. The cubic root of 86504220 is about 442.2614629324.

Adding to 86504220 its reverse (2240568), we get a palindrome (88744788).

The spelling of 86504220 in words is "eighty-six million, five hundred four thousand, two hundred twenty".