255760290 has 24 divisors (see below), whose sum is σ = 664976988. Its totient is φ = 68202720.

The previous prime is 255760249. The next prime is 255760303. The reversal of 255760290 is 92067552.

It can be written as a sum of positive squares in 2 ways, for example, as 246081969 + 9678321 = 15687^2 + 3111^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1420801 + ... + 1420980.

Almost surely, 2^255760290 is an apocalyptic number.

255760290 is an abundant number, since it is smaller than the sum of its proper divisors (409216698).

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

255760290 is a wasteful number, since it uses less digits than its factorization.

255760290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2841794 (or 2841791 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 255760290 is about 15992.5073081115. The cubic root of 255760290 is about 634.7621735292.

The spelling of 255760290 in words is "two hundred fifty-five million, seven hundred sixty thousand, two hundred ninety".