1428744 has 32 divisors (see below), whose sum is σ = 3636000. Its totient is φ = 467712.

The previous prime is 1428709. The next prime is 1428751. The reversal of 1428744 is 4478241.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 912 + ... + 1920.

It is an arithmetic number, because the mean of its divisors is an integer number (113625).

2^1428744 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 1428744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1818000).

1428744 is an abundant number, since it is smaller than the sum of its proper divisors (2207256).

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

1428744 is a wasteful number, since it uses less digits than its factorization.

1428744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077 (or 1073 counting only the distinct ones).

The product of its digits is 7168, while the sum is 30.

The square root of 1428744 is about 1195.3007989623. The cubic root of 1428744 is about 112.6293228866.

The spelling of 1428744 in words is "one million, four hundred twenty-eight thousand, seven hundred forty-four".