4578320 has 40 divisors (see below), whose sum is σ = 10743360. Its totient is φ = 1814400.

The previous prime is 4578313. The next prime is 4578361. The reversal of 4578320 is 238754.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×4578320² = 41922028044800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11891 + ... + 12269.

It is an arithmetic number, because the mean of its divisors is an integer number (268584).

Almost surely, 2^4578320 is an apocalyptic number.

4578320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4578320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5371680).

4578320 is an abundant number, since it is smaller than the sum of its proper divisors (6165040).

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

4578320 is a wasteful number, since it uses less digits than its factorization.

4578320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543 (or 537 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 4578320 is about 2139.7009136793. The cubic root of 4578320 is about 166.0486623676.

The spelling of 4578320 in words is "four million, five hundred seventy-eight thousand, three hundred twenty".