1128547 has 4 divisors (see below), whose sum is σ = 1289776. Its totient is φ = 967320.

The previous prime is 1128539. The next prime is 1128553. The reversal of 1128547 is 7458211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1128547 - 2³ = 1128539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1128527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80604 + ... + 80617.

It is an arithmetic number, because the mean of its divisors is an integer number (322444).

2^1128547 is an apocalyptic number.

1128547 is a deficient number, since it is larger than the sum of its proper divisors (161229).

1128547 is an equidigital number, since it uses as much as digits as its factorization.

1128547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161228.

The product of its digits is 2240, while the sum is 28.

The square root of 1128547 is about 1062.3309277245. The cubic root of 1128547 is about 104.1133810312.

The spelling of 1128547 in words is "one million, one hundred twenty-eight thousand, five hundred forty-seven".