986081220 has 72 divisors (see below), whose sum is σ = 3002063064. Its totient is φ = 261992448.

The previous prime is 986081183. The next prime is 986081221. The reversal of 986081220 is 22180689.

It can be written as a sum of positive squares in 4 ways, for example, as 15634116 + 970447104 = 3954^2 + 31152^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (986081221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39972 + ... + 59748.

Almost surely, 2^986081220 is an apocalyptic number.

986081220 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 986081220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1501031532).

986081220 is an abundant number, since it is smaller than the sum of its proper divisors (2015981844).

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

986081220 is a wasteful number, since it uses less digits than its factorization.

986081220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20069 (or 20064 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 986081220 is about 31401.9301954514. The cubic root of 986081220 is about 995.3387128281.

The spelling of 986081220 in words is "nine hundred eighty-six million, eighty-one thousand, two hundred twenty".