86928780220 has 96 divisors (see below), whose sum is σ = 199707475968. Its totient is φ = 31654167552.

The previous prime is 86928780199. The next prime is 86928780223. The reversal of 86928780220 is 2208782968.

It is a super-2 number, since 2×86928780220² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86928780223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1476997 + ... + 1534723.

It is an arithmetic number, because the mean of its divisors is an integer number (2080286208).

Almost surely, 2^86928780220 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 86928780220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99853737984).

86928780220 is an abundant number, since it is smaller than the sum of its proper divisors (112778695748).

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

86928780220 is a wasteful number, since it uses less digits than its factorization.

86928780220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57899 (or 57897 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 52.

The spelling of 86928780220 in words is "eighty-six billion, nine hundred twenty-eight million, seven hundred eighty thousand, two hundred twenty".