578120895 has 40 divisors (see below), whose sum is σ = 1130556240. Its totient is φ = 280298880.

The previous prime is 578120861. The next prime is 578120897. The reversal of 578120895 is 598021875.

It is a happy number.

It is not a de Polignac number, because 578120895 - 2⁸ = 578120639 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 578120895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (578120897) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 60430 + ... + 69339.

It is an arithmetic number, because the mean of its divisors is an integer number (28263906).

Almost surely, 2^578120895 is an apocalyptic number.

578120895 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

578120895 is a deficient number, since it is larger than the sum of its proper divisors (552435345).

578120895 is a wasteful number, since it uses less digits than its factorization.

578120895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129797 (or 129788 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 45.

The square root of 578120895 is about 24044.1447134224. The cubic root of 578120895 is about 833.0534911921.

The spelling of 578120895 in words is "five hundred seventy-eight million, one hundred twenty thousand, eight hundred ninety-five".