1428578 has 8 divisors (see below), whose sum is σ = 2268972. Its totient is φ = 672256.

The previous prime is 1428571. The next prime is 1428587. The reversal of 1428578 is 8758241.

It can be written as a sum of positive squares in 2 ways, for example, as 1423249 + 5329 = 1193^2 + 73^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1428571) 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, 20975 + ... + 21042.

2^1428578 is an apocalyptic number.

1428578 is a deficient number, since it is larger than the sum of its proper divisors (840394).

1428578 is a wasteful number, since it uses less digits than its factorization.

1428578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42036.

The product of its digits is 17920, while the sum is 35.

The square root of 1428578 is about 1195.2313583570. The cubic root of 1428578 is about 112.6249607354.

The spelling of 1428578 in words is "one million, four hundred twenty-eight thousand, five hundred seventy-eight".