86503220 has 12 divisors (see below), whose sum is σ = 181656804. Its totient is φ = 34601280.

The previous prime is 86503217. The next prime is 86503223. The reversal of 86503220 is 2230568.

It is an interprime number because it is at equal distance from previous prime (86503217) and next prime (86503223).

It can be written as a sum of positive squares in 2 ways, for example, as 9168784 + 77334436 = 3028^2 + 8794^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 86503220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86503223) 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, 2162561 + ... + 2162600.

It is an arithmetic number, because the mean of its divisors is an integer number (15138067).

Almost surely, 2^86503220 is an apocalyptic number.

It is an amenable number.

86503220 is an abundant number, since it is smaller than the sum of its proper divisors (95153584).

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

86503220 is a wasteful number, since it uses less digits than its factorization.

86503220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4325170 (or 4325168 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 86503220 is about 9300.7107255306. The cubic root of 86503220 is about 442.2597587259.

Adding to 86503220 its reverse (2230568), we get a palindrome (88733788).

The spelling of 86503220 in words is "eighty-six million, five hundred three thousand, two hundred twenty".