1428917 has 8 divisors (see below), whose sum is σ = 1689600. Its totient is φ = 1182384.

The previous prime is 1428899. The next prime is 1428923. The reversal of 1428917 is 7198241.

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

It is not a de Polignac number, because 1428917 - 2⁶ = 1428853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428937) 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, 3317 + ... + 3722.

It is an arithmetic number, because the mean of its divisors is an integer number (211200).

2^1428917 is an apocalyptic number.

It is an amenable number.

1428917 is a deficient number, since it is larger than the sum of its proper divisors (260683).

1428917 is an equidigital number, since it uses as much as digits as its factorization.

1428917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7075.

The product of its digits is 4032, while the sum is 32.

The square root of 1428917 is about 1195.3731634933. The cubic root of 1428917 is about 112.6338686243.

The spelling of 1428917 in words is "one million, four hundred twenty-eight thousand, nine hundred seventeen".