320002240 has 56 divisors (see below), whose sum is σ = 788304240. Its totient is φ = 123583488.

The previous prime is 320002231. The next prime is 320002283. The reversal of 320002240 is 42200023.

320002240 is a modest number, since divided by 2240 gives 320 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 320002240.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7962 + ... + 26521.

Almost surely, 2^320002240 is an apocalyptic number.

It is an amenable number.

320002240 is an abundant number, since it is smaller than the sum of its proper divisors (468302000).

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

320002240 is a wasteful number, since it uses less digits than its factorization.

320002240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34529 (or 34519 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 320002240 is about 17888.6064297921. The cubic root of 320002240 is about 683.9919746445.

Adding to 320002240 its reverse (42200023), we get a palindrome (362202263).

The spelling of 320002240 in words is "three hundred twenty million, two thousand, two hundred forty".