1428559 has 8 divisors (see below), whose sum is σ = 1584720. Its totient is φ = 1276800.

The previous prime is 1428541. The next prime is 1428571. The reversal of 1428559 is 9558241.

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 1428559 - 2⁷ = 1428431 is a prime.

It is a Duffinian number.

1428559 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394 + ... + 1735.

It is an arithmetic number, because the mean of its divisors is an integer number (198090).

2^1428559 is an apocalyptic number.

1428559 is a deficient number, since it is larger than the sum of its proper divisors (156161).

1428559 is a wasteful number, since it uses less digits than its factorization.

1428559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201.

The product of its digits is 14400, while the sum is 34.

The square root of 1428559 is about 1195.2234100786. The cubic root of 1428559 is about 112.6244614315.

The spelling of 1428559 in words is "one million, four hundred twenty-eight thousand, five hundred fifty-nine".