1428273 has 40 divisors (see below), whose sum is σ = 2671680. Its totient is φ = 738720.

The previous prime is 1428257. The next prime is 1428281. The reversal of 1428273 is 3728241.

It is not a de Polignac number, because 1428273 - 2⁴ = 1428257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1428233) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 6123 + ... + 6351.

It is an arithmetic number, because the mean of its divisors is an integer number (66792).

2^1428273 is an apocalyptic number.

It is an amenable number.

1428273 is a deficient number, since it is larger than the sum of its proper divisors (1243407).

1428273 is a wasteful number, since it uses less digits than its factorization.

1428273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 250 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 1428273 is about 1195.1037611856. The cubic root of 1428273 is about 112.6169450588.

Subtracting 1428273 from its reverse (3728241), we obtain a cube (2299968 = 132³).

The spelling of 1428273 in words is "one million, four hundred twenty-eight thousand, two hundred seventy-three".