1347728 has 20 divisors (see below), whose sum is σ = 2635248. Its totient is φ = 667680.

The previous prime is 1347713. The next prime is 1347733. The reversal of 1347728 is 8277431.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1347694 and 1347703.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1775 + ... + 2417.

2^1347728 is an apocalyptic number.

It is an amenable number.

1347728 is a deficient number, since it is larger than the sum of its proper divisors (1287520).

1347728 is a wasteful number, since it uses less digits than its factorization.

1347728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782 (or 776 counting only the distinct ones).

The product of its digits is 9408, while the sum is 32.

The square root of 1347728 is about 1160.9168790228. The cubic root of 1347728 is about 110.4589092593.

The spelling of 1347728 in words is "one million, three hundred forty-seven thousand, seven hundred twenty-eight".