1428271 has 8 divisors (see below), whose sum is σ = 1549184. Its totient is φ = 1308960.

The previous prime is 1428257. The next prime is 1428281. The reversal of 1428271 is 1728241.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1428271 - 2⁷ = 1428143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428281) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2050 + ... + 2656.

It is an arithmetic number, because the mean of its divisors is an integer number (193648).

2^1428271 is an apocalyptic number.

1428271 is a deficient number, since it is larger than the sum of its proper divisors (120913).

1428271 is a wasteful number, since it uses less digits than its factorization.

1428271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801.

The product of its digits is 896, while the sum is 25.

The square root of 1428271 is about 1195.1029244379. The cubic root of 1428271 is about 112.6168924932.

The spelling of 1428271 in words is "one million, four hundred twenty-eight thousand, two hundred seventy-one".