1428506 has 8 divisors (see below), whose sum is σ = 2148960. Its totient is φ = 712188.

The previous prime is 1428491. The next prime is 1428521. The reversal of 1428506 is 6058241.

It is an interprime number because it is at equal distance from previous prime (1428491) and next prime (1428521).

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65 + ... + 1691.

It is an arithmetic number, because the mean of its divisors is an integer number (268620).

2^1428506 is an apocalyptic number.

1428506 is a deficient number, since it is larger than the sum of its proper divisors (720454).

1428506 is a wasteful number, since it uses less digits than its factorization.

1428506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1428506 is about 1195.2012382858. The cubic root of 1428506 is about 112.6230686130.

The spelling of 1428506 in words is "one million, four hundred twenty-eight thousand, five hundred six".