320494080 has 160 divisors (see below), whose sum is σ = 1060646400. Its totient is φ = 82460672.

The previous prime is 320494067. The next prime is 320494087. The reversal of 320494080 is 80494023.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (320494087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222001 + ... + 223439.

It is an arithmetic number, because the mean of its divisors is an integer number (6629040).

Almost surely, 2^320494080 is an apocalyptic number.

320494080 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 320494080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530323200).

320494080 is an abundant number, since it is smaller than the sum of its proper divisors (740152320).

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

320494080 is a wasteful number, since it uses less digits than its factorization.

320494080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494 (or 1478 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 320494080 is about 17902.3484492957. The cubic root of 320494080 is about 684.3422246976.

The spelling of 320494080 in words is "three hundred twenty million, four hundred ninety-four thousand, eighty".