1280530080 has 192 divisors, whose sum is σ = 4718044800. Its totient is φ = 323481600.

The previous prime is 1280530079. The next prime is 1280530169. The reversal of 1280530080 is 800350821.

It is a happy number.

1280530080 is a `hidden beast` number, since 1 + 280 + 5 + 300 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 31 ways as a sum of consecutive naturals, for example, 74280 + ... + 89880.

It is an arithmetic number, because the mean of its divisors is an integer number (24573150).

Almost surely, 2^1280530080 is an apocalyptic number.

1280530080 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 1280530080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2359022400).

1280530080 is an abundant number, since it is smaller than the sum of its proper divisors (3437514720).

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

1280530080 is a wasteful number, since it uses less digits than its factorization.

1280530080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15644 (or 15630 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 1280530080 is about 35784.4949663957. The cubic root of 1280530080 is about 1085.9169070456.

The spelling of 1280530080 in words is "one billion, two hundred eighty million, five hundred thirty thousand, eighty".