320120000 has 140 divisors (see below), whose sum is σ = 814126896. Its totient is φ = 124800000.

The previous prime is 320119991. The next prime is 320120023. The reversal of 320120000 is 21023.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 320120000.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2119925 + ... + 2120075.

Almost surely, 2^320120000 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 320120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (407063448).

320120000 is an abundant number, since it is smaller than the sum of its proper divisors (494006896).

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

320120000 is an equidigital number, since it uses as much as digits as its factorization.

320120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 320120000 is about 17891.8976075765. The cubic root of 320120000 is about 684.0758667829.

Adding to 320120000 its reverse (21023), we get a palindrome (320141023).

The spelling of 320120000 in words is "three hundred twenty million, one hundred twenty thousand".