1280080 has 20 divisors (see below), whose sum is σ = 2976372. Its totient is φ = 512000.

The previous prime is 1280023. The next prime is 1280101. The reversal of 1280080 is 800821.

1280080 = T₂₇₇ + T₂₇₈ + ... + T₃₀₆.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 795664 + 484416 = 892^2 + 696^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7921 + ... + 8080.

2^1280080 is an apocalyptic number.

1280080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1280080 is an abundant number, since it is smaller than the sum of its proper divisors (1696292).

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

1280080 is a wasteful number, since it uses less digits than its factorization.

1280080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16014 (or 16008 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 1280080 is about 1131.4062046851. The cubic root of 1280080 is about 108.5789666314.

It can be divided in two parts, 12800 and 80, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 1280080 in words is "one million, two hundred eighty thousand, eighty".