1263522304 has 80 divisors (see below), whose sum is σ = 2843318016. Its totient is φ = 555724800.

The previous prime is 1263522251. The next prime is 1263522307. The reversal of 1263522304 is 4032253621.

It is a super-2 number, since 2×1263522304² = 3192977225410936832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1263522307) 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 7 ways as a sum of consecutive naturals, for example, 170974 + ... + 178210.

Almost surely, 2^1263522304 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 1263522304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1421659008).

1263522304 is an abundant number, since it is smaller than the sum of its proper divisors (1579795712).

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

1263522304 is an equidigital number, since it uses as much as digits as its factorization.

1263522304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7297 (or 7281 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 1263522304 is about 35546.0589095331. The cubic root of 1263522304 is about 1081.0878111322.

Adding to 1263522304 its reverse (4032253621), we get a palindrome (5295775925).

The spelling of 1263522304 in words is "one billion, two hundred sixty-three million, five hundred twenty-two thousand, three hundred four".