320422556 has 12 divisors (see below), whose sum is σ = 564312168. Its totient is φ = 159190512.

The previous prime is 320422523. The next prime is 320422559. The reversal of 320422556 is 655224023.

320422556 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×320422556² = 205341228787146272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320422559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254486 + ... + 255741.

It is an arithmetic number, because the mean of its divisors is an integer number (47026014).

Almost surely, 2^320422556 is an apocalyptic number.

It is an amenable number.

320422556 is a deficient number, since it is larger than the sum of its proper divisors (243889612).

320422556 is a wasteful number, since it uses less digits than its factorization.

320422556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510388 (or 510386 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 320422556 is about 17900.3507228210. The cubic root of 320422556 is about 684.2913131645.

Adding to 320422556 its reverse (655224023), we get a palindrome (975646579).

The spelling of 320422556 in words is "three hundred twenty million, four hundred twenty-two thousand, five hundred fifty-six".