320552320 has 64 divisors (see below), whose sum is σ = 836004240. Its totient is φ = 116561920.

The previous prime is 320552317. The next prime is 320552327. The reversal of 320552320 is 23255023.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 320552291 and 320552300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320552327) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 15727 + ... + 29806.

Almost surely, 2^320552320 is an apocalyptic number.

It is an amenable number.

320552320 is an abundant number, since it is smaller than the sum of its proper divisors (515451920).

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

320552320 is a wasteful number, since it uses less digits than its factorization.

320552320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45563 (or 45551 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 320552320 is about 17903.9749776411. The cubic root of 320552320 is about 684.3836749455.

The spelling of 320552320 in words is "three hundred twenty million, five hundred fifty-two thousand, three hundred twenty".