263280256 has 48 divisors (see below), whose sum is σ = 537126390. Its totient is φ = 128500736.

The previous prime is 263280221. The next prime is 263280289. The reversal of 263280256 is 652082362.

It can be written as a sum of positive squares in 3 ways, for example, as 229825600 + 33454656 = 15160^2 + 5784^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1336350 + ... + 1336546.

Almost surely, 2^263280256 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 263280256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268563195).

263280256 is an abundant number, since it is smaller than the sum of its proper divisors (273846134).

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

263280256 is an frugal number, since it uses more digits than its factorization.

263280256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 263280256 is about 16225.9131021955. The cubic root of 263280256 is about 640.9233546970.

The spelling of 263280256 in words is "two hundred sixty-three million, two hundred eighty thousand, two hundred fifty-six".