263040544 has 48 divisors (see below), whose sum is σ = 562910040. Its totient is φ = 120268800.

The previous prime is 263040521. The next prime is 263040571. The reversal of 263040544 is 445040362.

It can be written as a sum of positive squares in 4 ways, for example, as 256384144 + 6656400 = 16012^2 + 2580^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42444 + ... + 48244.

Almost surely, 2^263040544 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 263040544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281455020).

263040544 is an abundant number, since it is smaller than the sum of its proper divisors (299869496).

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

263040544 is a wasteful number, since it uses less digits than its factorization.

263040544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5933 (or 5925 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 263040544 is about 16218.5247171252. The cubic root of 263040544 is about 640.7287791864.

The spelling of 263040544 in words is "two hundred sixty-three million, forty thousand, five hundred forty-four".