1280485 has 8 divisors (see below), whose sum is σ = 1558656. Its totient is φ = 1009680.

The previous prime is 1280473. The next prime is 1280519. The reversal of 1280485 is 5840821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1280485 - 2⁵ = 1280453 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1449 + ... + 2158.

It is an arithmetic number, because the mean of its divisors is an integer number (194832).

2^1280485 is an apocalyptic number.

It is an amenable number.

1280485 is a deficient number, since it is larger than the sum of its proper divisors (278171).

1280485 is an equidigital number, since it uses as much as digits as its factorization.

1280485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3683.

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 1280485 is about 1131.5851713415. The cubic root of 1280485 is about 108.5904163961.

The spelling of 1280485 in words is "one million, two hundred eighty thousand, four hundred eighty-five".