320021422 has 16 divisors (see below), whose sum is σ = 551030400. Its totient is φ = 136546488.

The previous prime is 320021417. The next prime is 320021459. The reversal of 320021422 is 224120023.

It is a junction number, because it is equal to n+sod(n) for n = 320021396 and 320021405.

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, 47172 + ... + 53527.

It is an arithmetic number, because the mean of its divisors is an integer number (34439400).

Almost surely, 2^320021422 is an apocalyptic number.

320021422 is a deficient number, since it is larger than the sum of its proper divisors (231008978).

320021422 is a wasteful number, since it uses less digits than its factorization.

320021422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100935.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 320021422 is about 17889.1425730805. The cubic root of 320021422 is about 684.0056412904.

Adding to 320021422 its reverse (224120023), we get a palindrome (544141445).

The spelling of 320021422 in words is "three hundred twenty million, twenty-one thousand, four hundred twenty-two".