1263270960 has 360 divisors, whose sum is σ = 5024584656. Its totient is φ = 283530240.

The previous prime is 1263270941. The next prime is 1263270989. The reversal of 1263270960 is 690723621.

1263270960 is a `hidden beast` number, since 12 + 632 + 7 + 0 + 9 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2151787 + ... + 2152373.

Almost surely, 2^1263270960 is an apocalyptic number.

1263270960 is a gapful number since it is divisible by the number (10) 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 1263270960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2512292328).

1263270960 is an abundant number, since it is smaller than the sum of its proper divisors (3761313696).

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

1263270960 is a wasteful number, since it uses less digits than its factorization.

1263270960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 1263270960 is about 35542.5232643942. The cubic root of 1263270960 is about 1081.0161218676.

The spelling of 1263270960 in words is "one billion, two hundred sixty-three million, two hundred seventy thousand, nine hundred sixty".