1428566 has 4 divisors (see below), whose sum is σ = 2142852. Its totient is φ = 714282.

The previous prime is 1428541. The next prime is 1428571. The reversal of 1428566 is 6658241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6658241 = 433 ⋅15377.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 357140 + ... + 357143.

It is an arithmetic number, because the mean of its divisors is an integer number (535713).

2^1428566 is an apocalyptic number.

1428566 is a deficient number, since it is larger than the sum of its proper divisors (714286).

1428566 is an equidigital number, since it uses as much as digits as its factorization.

1428566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714285.

The product of its digits is 11520, while the sum is 32.

The square root of 1428566 is about 1195.2263383979. The cubic root of 1428566 is about 112.6246453861.

The spelling of 1428566 in words is "one million, four hundred twenty-eight thousand, five hundred sixty-six".