320224402 has 4 divisors (see below), whose sum is σ = 480336606. Its totient is φ = 160112200.

The previous prime is 320224379. The next prime is 320224453. The reversal of 320224402 is 204422023.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 307967401 + 12257001 = 17549^2 + 3501^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 320224402.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 80056099 + ... + 80056102.

Almost surely, 2^320224402 is an apocalyptic number.

320224402 is a deficient number, since it is larger than the sum of its proper divisors (160112204).

320224402 is a wasteful number, since it uses less digits than its factorization.

320224402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160112203.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 320224402 is about 17894.8149473528. The cubic root of 320224402 is about 684.1502254880.

Adding to 320224402 its reverse (204422023), we get a palindrome (524646425).

The spelling of 320224402 in words is "three hundred twenty million, two hundred twenty-four thousand, four hundred two".