1263922560 has 192 divisors, whose sum is σ = 4594590000. Its totient is φ = 319279104.

The previous prime is 1263922559. The next prime is 1263922571. The reversal of 1263922560 is 652293621.

1263922560 is a `hidden beast` number, since 1 + 2 + 6 + 3 + 92 + 2 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103666 + ... + 115214.

Almost surely, 2^1263922560 is an apocalyptic number.

1263922560 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 1263922560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2297295000).

1263922560 is an abundant number, since it is smaller than the sum of its proper divisors (3330667440).

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

1263922560 is a wasteful number, since it uses less digits than its factorization.

1263922560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11593 (or 11578 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 1263922560 is about 35551.6885674928. The cubic root of 1263922560 is about 1081.2019540057.

The spelling of 1263922560 in words is "one billion, two hundred sixty-three million, nine hundred twenty-two thousand, five hundred sixty".