1128647 has 8 divisors (see below), whose sum is σ = 1287216. Its totient is φ = 980352.

The previous prime is 1128643. The next prime is 1128661. The reversal of 1128647 is 7468211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1128647 - 2² = 1128643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2333 + ... + 2774.

It is an arithmetic number, because the mean of its divisors is an integer number (160902).

2^1128647 is an apocalyptic number.

1128647 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1128647 is a deficient number, since it is larger than the sum of its proper divisors (158569).

1128647 is a wasteful number, since it uses less digits than its factorization.

1128647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5137.

The product of its digits is 2688, while the sum is 29.

The square root of 1128647 is about 1062.3779929950. The cubic root of 1128647 is about 104.1164560857.

The spelling of 1128647 in words is "one million, one hundred twenty-eight thousand, six hundred forty-seven".