578497140 has 180 divisors, whose sum is σ = 1966032684. Its totient is φ = 142331904.

The previous prime is 578497121. The next prime is 578497141. The reversal of 578497140 is 41794875.

It is a happy number.

578497140 is a `hidden beast` number, since 578 + 4 + 9 + 71 + 4 + 0 = 666.

578497140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 320123664 + 258373476 = 17892^2 + 16074^2 .

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (578497141) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 272724 + ... + 274836.

Almost surely, 2^578497140 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 578497140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (983016342).

578497140 is an abundant number, since it is smaller than the sum of its proper divisors (1387535544).

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

578497140 is a wasteful number, since it uses less digits than its factorization.

578497140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160 (or 2136 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 578497140 is about 24051.9674870893. The cubic root of 578497140 is about 833.2341709562.

The spelling of 578497140 in words is "five hundred seventy-eight million, four hundred ninety-seven thousand, one hundred forty".