1440128 has 16 divisors (see below), whose sum is σ = 2869260. Its totient is φ = 720000.

The previous prime is 1440119. The next prime is 1440203. The reversal of 1440128 is 8210441.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5498 + ... + 5753.

2^1440128 is an apocalyptic number.

It is an amenable number.

1440128 is a deficient number, since it is larger than the sum of its proper divisors (1429132).

1440128 is an equidigital number, since it uses as much as digits as its factorization.

1440128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11265 (or 11253 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1440128 is about 1200.0533321482. The cubic root of 1440128 is about 112.9276692725.

Adding to 1440128 its reverse (8210441), we get a palindrome (9650569).

The spelling of 1440128 in words is "one million, four hundred forty thousand, one hundred twenty-eight".