1263398304 has 96 divisors (see below), whose sum is σ = 3912523776. Its totient is φ = 349320960.

The previous prime is 1263398287. The next prime is 1263398359. The reversal of 1263398304 is 4038933621.

1263398304 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9492 + ... + 51155.

It is an arithmetic number, because the mean of its divisors is an integer number (40755456).

Almost surely, 2^1263398304 is an apocalyptic number.

1263398304 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1263398304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1956261888).

1263398304 is an abundant number, since it is smaller than the sum of its proper divisors (2649125472).

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

1263398304 is a wasteful number, since it uses less digits than its factorization.

1263398304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60698 (or 60690 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 1263398304 is about 35544.3146508693. The cubic root of 1263398304 is about 1081.0524445822.

The spelling of 1263398304 in words is "one billion, two hundred sixty-three million, three hundred ninety-eight thousand, three hundred four".