1263155304 has 32 divisors (see below), whose sum is σ = 3209660640. Its totient is φ = 414148800.

The previous prime is 1263155303. The next prime is 1263155323. The reversal of 1263155304 is 4035513621.

It is a super-2 number, since 2×1263155304² = 3191122644046664832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1263155303) 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, 429942 + ... + 432869.

It is an arithmetic number, because the mean of its divisors is an integer number (100301895).

Almost surely, 2^1263155304 is an apocalyptic number.

It is an amenable number.

1263155304 is an abundant number, since it is smaller than the sum of its proper divisors (1946505336).

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

1263155304 is a wasteful number, since it uses less digits than its factorization.

1263155304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862881 (or 862877 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 1263155304 is about 35540.8962183004. The cubic root of 1263155304 is about 1080.9831308413.

Adding to 1263155304 its reverse (4035513621), we get a palindrome (5298668925).

The spelling of 1263155304 in words is "one billion, two hundred sixty-three million, one hundred fifty-five thousand, three hundred four".