578220 has 48 divisors (see below), whose sum is σ = 1693440. Its totient is φ = 147136.

The previous prime is 578213. The next prime is 578251. The reversal of 578220 is 22875.

578220 = T₁₃₅ + T₁₃₆ + ... + T₁₈₀.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1171 + ... + 1589.

It is an arithmetic number, because the mean of its divisors is an integer number (35280).

2⁵⁷⁸²²⁰ 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 578220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (846720).

578220 is an abundant number, since it is smaller than the sum of its proper divisors (1115220).

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

578220 is a wasteful number, since it uses less digits than its factorization.

578220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454 (or 452 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 578220 is about 760.4077853363. The cubic root of 578220 is about 83.3101090838.

The spelling of 578220 in words is "five hundred seventy-eight thousand, two hundred twenty".