1444428 has 18 divisors (see below), whose sum is σ = 3651284. Its totient is φ = 481464.

The previous prime is 1444411. The next prime is 1444441. The reversal of 1444428 is 8244441.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20026 + ... + 20097.

2^1444428 is an apocalyptic number.

1444428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1444428 is an abundant number, since it is smaller than the sum of its proper divisors (2206856).

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

1444428 is a wasteful number, since it uses less digits than its factorization.

1444428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40133 (or 40128 counting only the distinct ones).

The product of its digits is 4096, while the sum is 27.

The square root of 1444428 is about 1201.8435838328. The cubic root of 1444428 is about 113.0399524584.

Adding to 1444428 its reverse (8244441), we get a palindrome (9688869).

The spelling of 1444428 in words is "one million, four hundred forty-four thousand, four hundred twenty-eight".