578481520 has 20 divisors (see below), whose sum is σ = 1344969720. Its totient is φ = 231392576.

The previous prime is 578481503. The next prime is 578481523. The reversal of 578481520 is 25184875.

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (578481523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3615430 + ... + 3615589.

It is an arithmetic number, because the mean of its divisors is an integer number (67248486).

Almost surely, 2^578481520 is an apocalyptic number.

It is an amenable number.

578481520 is an abundant number, since it is smaller than the sum of its proper divisors (766488200).

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

578481520 is a wasteful number, since it uses less digits than its factorization.

578481520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7231032 (or 7231026 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 40.

The square root of 578481520 is about 24051.6427713368. The cubic root of 578481520 is about 833.2266715040.

The spelling of 578481520 in words is "five hundred seventy-eight million, four hundred eighty-one thousand, five hundred twenty".