86220220 has 12 divisors (see below), whose sum is σ = 181062504. Its totient is φ = 34488080.

The previous prime is 86220193. The next prime is 86220221. The reversal of 86220220 is 2202268.

It is a junction number, because it is equal to n+sod(n) for n = 86220191 and 86220200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86220221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2155486 + ... + 2155525.

It is an arithmetic number, because the mean of its divisors is an integer number (15088542).

Almost surely, 2^86220220 is an apocalyptic number.

It is an amenable number.

86220220 is an abundant number, since it is smaller than the sum of its proper divisors (94842284).

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

86220220 is a wasteful number, since it uses less digits than its factorization.

86220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4311020 (or 4311018 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 86220220 is about 9285.4843707800. The cubic root of 86220220 is about 441.7769395158.

Adding to 86220220 its reverse (2202268), we get a palindrome (88422488).

The spelling of 86220220 in words is "eighty-six million, two hundred twenty thousand, two hundred twenty".