320266240 has 112 divisors (see below), whose sum is σ = 879177312. Its totient is φ = 109707264.

The previous prime is 320266159. The next prime is 320266277. The reversal of 320266240 is 42662023.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286162 + ... + 287278.

Almost surely, 2^320266240 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 320266240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (439588656).

320266240 is an abundant number, since it is smaller than the sum of its proper divisors (558911072).

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

320266240 is an equidigital number, since it uses as much as digits as its factorization.

320266240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155 (or 1131 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 320266240 is about 17895.9839070111. The cubic root of 320266240 is about 684.1800194184.

The spelling of 320266240 in words is "three hundred twenty million, two hundred sixty-six thousand, two hundred forty".