1263081232 has 120 divisors (see below), whose sum is σ = 3048414264. Its totient is φ = 503709696.

The previous prime is 1263081199. The next prime is 1263081233. The reversal of 1263081232 is 2321803621.

It can be written as a sum of positive squares in 4 ways, for example, as 623800576 + 639280656 = 24976^2 + 25284^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 1263081232.

It is not an unprimeable number, because it can be changed into a prime (1263081233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1292328 + ... + 1293304.

Almost surely, 2^1263081232 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 1263081232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1524207132).

1263081232 is an abundant number, since it is smaller than the sum of its proper divisors (1785333032).

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

1263081232 is a wasteful number, since it uses less digits than its factorization.

1263081232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113 (or 1100 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1263081232 is about 35539.8541358853. The cubic root of 1263081232 is about 1080.9620006479.

Adding to 1263081232 its reverse (2321803621), we get a palindrome (3584884853).

The spelling of 1263081232 in words is "one billion, two hundred sixty-three million, eighty-one thousand, two hundred thirty-two".