577778128 has 20 divisors (see below), whose sum is σ = 1121704000. Its totient is φ = 288306144.

The previous prime is 577778111. The next prime is 577778129. The reversal of 577778128 is 821877775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (577778129) by changing a digit.

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, 28200 + ... + 44167.

It is an arithmetic number, because the mean of its divisors is an integer number (56085200).

Almost surely, 2^577778128 is an apocalyptic number.

It is an amenable number.

577778128 is a deficient number, since it is larger than the sum of its proper divisors (543925872).

577778128 is a wasteful number, since it uses less digits than its factorization.

577778128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72874 (or 72868 counting only the distinct ones).

The product of its digits is 1536640, while the sum is 52.

The square root of 577778128 is about 24037.0157881547. The cubic root of 577778128 is about 832.8888199271. Note that the first 4 decimals are identical.

The spelling of 577778128 in words is "five hundred seventy-seven million, seven hundred seventy-eight thousand, one hundred twenty-eight".