1428944 has 40 divisors (see below), whose sum is σ = 3160512. Its totient is φ = 619520.

The previous prime is 1428937. The next prime is 1428949. The reversal of 1428944 is 4498241.

It is a self number, because there is not a number n which added to its sum of digits gives 1428944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428949) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 3872 + ... + 4224.

2^1428944 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 1428944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1580256).

1428944 is an abundant number, since it is smaller than the sum of its proper divisors (1731568).

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

1428944 is a wasteful number, since it uses less digits than its factorization.

1428944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395 (or 389 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 1428944 is about 1195.3844569844. The cubic root of 1428944 is about 112.6345780416.

The spelling of 1428944 in words is "one million, four hundred twenty-eight thousand, nine hundred forty-four".