1428517 has 4 divisors (see below), whose sum is σ = 1431040. Its totient is φ = 1425996.

The previous prime is 1428491. The next prime is 1428521. The reversal of 1428517 is 7158241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1428517 - 2⁷ = 1428389 is a prime.

It is a Duffinian number.

1428517 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28 + ... + 1690.

It is an arithmetic number, because the mean of its divisors is an integer number (357760).

2^1428517 is an apocalyptic number.

It is an amenable number.

1428517 is a deficient number, since it is larger than the sum of its proper divisors (2523).

1428517 is an equidigital number, since it uses as much as digits as its factorization.

1428517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522.

The product of its digits is 2240, while the sum is 28.

The square root of 1428517 is about 1195.2058400125. The cubic root of 1428517 is about 112.6233576914.

The spelling of 1428517 in words is "one million, four hundred twenty-eight thousand, five hundred seventeen".