263800072 has 24 divisors (see below), whose sum is σ = 497562750. Its totient is φ = 131120640.

The previous prime is 263800063. The next prime is 263800073. The reversal of 263800072 is 270008362.

It can be written as a sum of positive squares in only one way, i.e., 214153956 + 49646116 = 14634^2 + 7046^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 263800072.

It is not an unprimeable number, because it can be changed into a prime (263800073) by changing a digit.

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, 587304 + ... + 587752.

Almost surely, 2^263800072 is an apocalyptic number.

It is an amenable number.

263800072 is a deficient number, since it is larger than the sum of its proper divisors (233762678).

263800072 is an equidigital number, since it uses as much as digits as its factorization.

263800072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 263800072 is about 16241.9232851285. The cubic root of 263800072 is about 641.3448867386.

The spelling of 263800072 in words is "two hundred sixty-three million, eight hundred thousand, seventy-two".