1128278 has 16 divisors (see below), whose sum is σ = 1769280. Its totient is φ = 539136.

The previous prime is 1128251. The next prime is 1128287. The reversal of 1128278 is 8728211.

It is a super-2 number, since 2×1128278² = 2546022490568, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1128278.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5750 + ... + 5942.

It is an arithmetic number, because the mean of its divisors is an integer number (110580).

2^1128278 is an apocalyptic number.

1128278 is a deficient number, since it is larger than the sum of its proper divisors (641002).

1128278 is a wasteful number, since it uses less digits than its factorization.

1128278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311.

The product of its digits is 1792, while the sum is 29.

The square root of 1128278 is about 1062.2043117969. The cubic root of 1128278 is about 104.1051082330.

The spelling of 1128278 in words is "one million, one hundred twenty-eight thousand, two hundred seventy-eight".