1281080 has 16 divisors (see below), whose sum is σ = 2882520. Its totient is φ = 512416.

The previous prime is 1281047. The next prime is 1281083. The reversal of 1281080 is 801821.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1281083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15974 + ... + 16053.

2^1281080 is an apocalyptic number.

1281080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1281080 is an abundant number, since it is smaller than the sum of its proper divisors (1601440).

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

1281080 is a wasteful number, since it uses less digits than its factorization.

1281080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32038 (or 32034 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 1281080 is about 1131.8480463384. The cubic root of 1281080 is about 108.6072332774.

The spelling of 1281080 in words is "one million, two hundred eighty-one thousand, eighty".