320055764 has 48 divisors (see below), whose sum is σ = 680617728. Its totient is φ = 128713728.

The previous prime is 320055763. The next prime is 320055773. The reversal of 320055764 is 467550023.

It is a self number, because there is not a number n which added to its sum of digits gives 320055764.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320055761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29444 + ... + 38820.

It is an arithmetic number, because the mean of its divisors is an integer number (14179536).

Almost surely, 2^320055764 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 320055764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340308864).

320055764 is an abundant number, since it is smaller than the sum of its proper divisors (360561964).

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

320055764 is a wasteful number, since it uses less digits than its factorization.

320055764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9464 (or 9462 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 320055764 is about 17890.1024032843. The cubic root of 320055764 is about 684.0301076541.

The spelling of 320055764 in words is "three hundred twenty million, fifty-five thousand, seven hundred sixty-four".