320422624 has 48 divisors (see below), whose sum is σ = 654847200. Its totient is φ = 154151424.

The previous prime is 320422607. The next prime is 320422643. The reversal of 320422624 is 426224023.

It is a congruent number.

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, 451582 + ... + 452290.

It is an arithmetic number, because the mean of its divisors is an integer number (13642650).

Almost surely, 2^320422624 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 320422624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327423600).

320422624 is an abundant number, since it is smaller than the sum of its proper divisors (334424576).

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

320422624 is a wasteful number, since it uses less digits than its factorization.

320422624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235 (or 1227 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 320422624 is about 17900.3526222251. The cubic root of 320422624 is about 684.2913615712.

Adding to 320422624 its reverse (426224023), we get a palindrome (746646647).

The spelling of 320422624 in words is "three hundred twenty million, four hundred twenty-two thousand, six hundred twenty-four".