320986260 has 192 divisors, whose sum is σ = 1165248000. Its totient is φ = 73325952.

The previous prime is 320986249. The next prime is 320986261. The reversal of 320986260 is 62689023.

320986260 is a `hidden beast` number, since 3 + 20 + 9 + 8 + 626 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320986261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 184354 + ... + 186086.

It is an arithmetic number, because the mean of its divisors is an integer number (6069000).

Almost surely, 2^320986260 is an apocalyptic number.

320986260 is a gapful number since it is divisible by the number (30) 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 320986260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (582624000).

320986260 is an abundant number, since it is smaller than the sum of its proper divisors (844261740).

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

320986260 is a wasteful number, since it uses less digits than its factorization.

320986260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772 (or 1750 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 320986260 is about 17916.0894170575. The cubic root of 320986260 is about 684.6923583476.

The spelling of 320986260 in words is "three hundred twenty million, nine hundred eighty-six thousand, two hundred sixty".