1263280880 has 40 divisors (see below), whose sum is σ = 3109903632. Its totient is φ = 475587584.

The previous prime is 1263280871. The next prime is 1263280933. The reversal of 1263280880 is 880823621.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

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, 463082 + ... + 465801.

Almost surely, 2^1263280880 is an apocalyptic number.

1263280880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1263280880 is an abundant number, since it is smaller than the sum of its proper divisors (1846622752).

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

1263280880 is a wasteful number, since it uses less digits than its factorization.

1263280880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928913 (or 928907 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 1263280880 is about 35542.6628152703. The cubic root of 1263280880 is about 1081.0189514669.

The spelling of 1263280880 in words is "one billion, two hundred sixty-three million, two hundred eighty thousand, eight hundred eighty".