578866820 has 48 divisors (see below), whose sum is σ = 1412076288. Its totient is φ = 195212160.

The previous prime is 578866811. The next prime is 578866837. The reversal of 578866820 is 28668875.

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, 25352 + ... + 42431.

It is an arithmetic number, because the mean of its divisors is an integer number (29418256).

Almost surely, 2^578866820 is an apocalyptic number.

It is an amenable number.

578866820 is an abundant number, since it is smaller than the sum of its proper divisors (833209468).

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

578866820 is a wasteful number, since it uses less digits than its factorization.

578866820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67860 (or 67858 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 50.

The square root of 578866820 is about 24059.6512859185. The cubic root of 578866820 is about 833.4116218004.

The spelling of 578866820 in words is "five hundred seventy-eight million, eight hundred sixty-six thousand, eight hundred twenty".