1439728 has 10 divisors (see below), whose sum is σ = 2789504. Its totient is φ = 719856.

The previous prime is 1439719. The next prime is 1439729. The reversal of 1439728 is 8279341.

It is a junction number, because it is equal to n+sod(n) for n = 1439693 and 1439702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1439729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44976 + ... + 45007.

2^1439728 is an apocalyptic number.

It is an amenable number.

1439728 is a deficient number, since it is larger than the sum of its proper divisors (1349776).

1439728 is an equidigital number, since it uses as much as digits as its factorization.

1439728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89991 (or 89985 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 1439728 is about 1199.8866613143. The cubic root of 1439728 is about 112.9172129680.

The spelling of 1439728 in words is "one million, four hundred thirty-nine thousand, seven hundred twenty-eight".