1128775 has 12 divisors (see below), whose sum is σ = 1413352. Its totient is φ = 894240.

The previous prime is 1128773. The next prime is 1128779. The reversal of 1128775 is 5778211.

It is a happy number.

It is not a de Polignac number, because 1128775 - 2¹ = 1128773 is a prime.

It is a super-3 number, since 3×1128775³ = 4314628433341453125, which contains 333 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 3937 + ... + 4213.

2^1128775 is an apocalyptic number.

1128775 is a deficient number, since it is larger than the sum of its proper divisors (284577).

1128775 is a wasteful number, since it uses less digits than its factorization.

1128775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450 (or 445 counting only the distinct ones).

The product of its digits is 3920, while the sum is 31.

The square root of 1128775 is about 1062.4382334988. The cubic root of 1128775 is about 104.1203918905.

The spelling of 1128775 in words is "one million, one hundred twenty-eight thousand, seven hundred seventy-five".