1128755 has 4 divisors (see below), whose sum is σ = 1354512. Its totient is φ = 903000.

The previous prime is 1128737. The next prime is 1128761. The reversal of 1128755 is 5578211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5578211 = 229 ⋅24359.

It is not a de Polignac number, because 1128755 - 2⁶ = 1128691 is a prime.

It is a Duffinian number.

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, 112871 + ... + 112880.

It is an arithmetic number, because the mean of its divisors is an integer number (338628).

2^1128755 is an apocalyptic number.

1128755 is a deficient number, since it is larger than the sum of its proper divisors (225757).

1128755 is an equidigital number, since it uses as much as digits as its factorization.

1128755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225756.

The product of its digits is 2800, while the sum is 29.

The square root of 1128755 is about 1062.4288211452. The cubic root of 1128755 is about 104.1197769406.

The spelling of 1128755 in words is "one million, one hundred twenty-eight thousand, seven hundred fifty-five".