673328320 has 56 divisors (see below), whose sum is σ = 1832421024. Its totient is φ = 230854656.

The previous prime is 673328263. The next prime is 673328321. The reversal of 673328320 is 23823376.

It is a tau number, because it is divible by the number of its divisors (56).

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (673328321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148057 + ... + 152536.

It is an arithmetic number, because the mean of its divisors is an integer number (32721804).

Almost surely, 2^673328320 is an apocalyptic number.

It is an amenable number.

673328320 is an abundant number, since it is smaller than the sum of its proper divisors (1159092704).

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

673328320 is a wasteful number, since it uses less digits than its factorization.

673328320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300617 (or 300607 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 673328320 is about 25948.5706735458. The cubic root of 673328320 is about 876.4805714345.

It can be divided in two parts, 6733 and 28320, that added together give a palindrome (35053).

The spelling of 673328320 in words is "six hundred seventy-three million, three hundred twenty-eight thousand, three hundred twenty".