1428485 has 4 divisors (see below), whose sum is σ = 1714188. Its totient is φ = 1142784.

The previous prime is 1428473. The next prime is 1428491. The reversal of 1428485 is 5848241.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 187489 + 1240996 = 433^2 + 1114^2 .

It is a cyclic number.

It is not a de Polignac number, because 1428485 - 2²⁰ = 379909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142844 + ... + 142853.

It is an arithmetic number, because the mean of its divisors is an integer number (428547).

2^1428485 is an apocalyptic number.

It is an amenable number.

1428485 is a deficient number, since it is larger than the sum of its proper divisors (285703).

1428485 is an equidigital number, since it uses as much as digits as its factorization.

1428485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285702.

The product of its digits is 10240, while the sum is 32.

The square root of 1428485 is about 1195.1924531221. The cubic root of 1428485 is about 112.6225167320.

The spelling of 1428485 in words is "one million, four hundred twenty-eight thousand, four hundred eighty-five".