1428024 has 64 divisors (see below), whose sum is σ = 4032000. Its totient is φ = 418176.

The previous prime is 1428013. The next prime is 1428029. The reversal of 1428024 is 4208241.

It is a Cunningham number, because it is equal to 1195²-1.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7077 + ... + 7275.

It is an arithmetic number, because the mean of its divisors is an integer number (63000).

2^1428024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1428024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2016000).

1428024 is an abundant number, since it is smaller than the sum of its proper divisors (2603976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1428024 is a wasteful number, since it uses less digits than its factorization.

1428024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1428024 is about 1194.9995815899. Note that the first 3 decimals coincide. The cubic root of 1428024 is about 112.6104002668.

The spelling of 1428024 in words is "one million, four hundred twenty-eight thousand, twenty-four".