578056720 has 20 divisors (see below), whose sum is σ = 1343982060. Its totient is φ = 231222656.

The previous prime is 578056709. The next prime is 578056751. The reversal of 578056720 is 27650875.

It can be written as a sum of positive squares in 2 ways, for example, as 272646144 + 305410576 = 16512^2 + 17476^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3612775 + ... + 3612934.

It is an arithmetic number, because the mean of its divisors is an integer number (67199103).

Almost surely, 2^578056720 is an apocalyptic number.

It is an amenable number.

578056720 is an abundant number, since it is smaller than the sum of its proper divisors (765925340).

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

578056720 is a wasteful number, since it uses less digits than its factorization.

578056720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7225722 (or 7225716 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 578056720 is about 24042.8101518936. The cubic root of 578056720 is about 833.0226653524.

It can be divided in two parts, 5780 and 56720, that added together give a square (62500 = 250²).

The spelling of 578056720 in words is "five hundred seventy-eight million, fifty-six thousand, seven hundred twenty".