275128564 has 12 divisors (see below), whose sum is σ = 489636000. Its totient is φ = 135232568.

The previous prime is 275128537. The next prime is 275128571. The reversal of 275128564 is 465821572.

It is a congruent number.

It is an unprimeable number.

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, 582664 + ... + 583135.

It is an arithmetic number, because the mean of its divisors is an integer number (40803000).

Almost surely, 2^275128564 is an apocalyptic number.

It is an amenable number.

275128564 is a deficient number, since it is larger than the sum of its proper divisors (214507436).

275128564 is a wasteful number, since it uses less digits than its factorization.

275128564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165862 (or 1165860 counting only the distinct ones).

The product of its digits is 134400, while the sum is 40.

The square root of 275128564 is about 16586.9998492796. Note that the first 3 decimals coincide. The cubic root of 275128564 is about 650.3970465702.

The spelling of 275128564 in words is "two hundred seventy-five million, one hundred twenty-eight thousand, five hundred sixty-four".