1128778 has 8 divisors (see below), whose sum is σ = 1935072. Its totient is φ = 483756.

The previous prime is 1128773. The next prime is 1128779. The reversal of 1128778 is 8778211.

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

It is not an unprimeable number, because it can be changed into a prime (1128773) 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, 40300 + ... + 40327.

It is an arithmetic number, because the mean of its divisors is an integer number (241884).

2^1128778 is an apocalyptic number.

1128778 is a deficient number, since it is larger than the sum of its proper divisors (806294).

1128778 is an equidigital number, since it uses as much as digits as its factorization.

1128778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80636.

The product of its digits is 6272, while the sum is 34.

The square root of 1128778 is about 1062.4396453446. The cubic root of 1128778 is about 104.1204841323.

The spelling of 1128778 in words is "one million, one hundred twenty-eight thousand, seven hundred seventy-eight".